Number
1,188
1,188 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 18
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 24
- σ(n) — sum of divisors
- 3,360
Primality
Prime factorization: 2 2 × 3 3 × 11
Divisors & multiples
All divisors (24)
Aliquot sum (sum of proper divisors):
2,172
Factor pairs (a × b = 1,188)
First multiples
Representations
- In words
- one thousand one hundred eighty-eight
- Ordinal
- 1188th
- Roman numeral
- MCLXXXVIII
- Binary
- 10010100100
- Octal
- 2244
- Hexadecimal
- 4A4
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1188, here are decompositions:
- 7 + 1181 = 1188
- 17 + 1171 = 1188
- 37 + 1151 = 1188
- 59 + 1129 = 1188
- 71 + 1117 = 1188
- 79 + 1109 = 1188
- 97 + 1091 = 1188
- 101 + 1087 = 1188
Showing the first eight; more decompositions exist.
Unicode codepoint
Ҥ
U+04A4
Uppercase letter (Lu)
UTF-8 encoding: D2 A4 (2 bytes).
Hex color
#0004A4
RGB(0, 4, 164)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.164.