189 (number)
189 is the natural number following 188 and preceding 190.In mathematics
189 is:
- an odd number
- a centered cube number
- a composite number
- a deficient number, as 131 is less than 189
- a heptagonal number
- a lucky number
- an Ulam number
- a 64-gonal number
- a Kaprekar constant in base 2
- palindromic in bases 2, 20, 26 and 62.
- a Harshad number in bases 3, 4, 5, 6, 7, 11, 13, 15.
- the sum of the sums of the divisors of the first 15 positive integers.
Also:
- 189 can be written as sum of two cubes in two ways: 43 + 53 and 63 + 3
- Divisors of 189: 1, 3, 7, 9, 21, 27, 63, 189
In astronomy
- 189 Phthia is a bright rocky main belt asteroid
- NGC 189 is an open cluster in the Cassiopeia constellation
In geography
- Lumsden No. 189, Saskatchewan in southwestern Saskatchewan, Canada
- 189th Airlift Squadron is a unit of the Idaho Air National Guard
- 189th Airlift Wing airlift unit, part of the Arkansas National Guard at Little Rock Air Force Base, Arkansas
- 189th Infantry Brigade, an infantry brigade of the United States Army based at Fort Bragg
- was a Royal Australian Navy s during World War II
- LSMR-189 was a United States Navy landing ship medium during World War II
- No. 189 Squadron RAF was a Royal Air Force squadron during World War I
- is a United States Navy replenishment oiler
- was a United States Navy troop transport during the Korean War
- was a United States Navy during World War II
- was a United States Navy Alamosa-class cargo ship during World War II
- was a United States Navy during World War II
- was a United States Navy during World War II
- was a United States Navy during World War II
In music
- The song "What a Beautiful Day" by Chris Cagle includes the lyrics, "Day 189. Oh, I almost lost that girl to my foolish pride"
In transportation
- London Buses route 189
- Air Canada Flight 189 flight from Ottawa to Vancouver crashed on takeoff on June 26, 1978
- * USA-189, an experimental satellite launched June 21, 2006
- DB AG electric locomotive class 189, a Siemens EuroSprinter ES64F4
In other fields
189 is also: