Number
1,318
1,318 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 13
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,980
Primality
Prime factorization: 2 × 659
Divisors & multiples
Aliquot sum (sum of proper divisors):
662
First multiples
Representations
- In words
- one thousand three hundred eighteen
- Ordinal
- 1318th
- Roman numeral
- MCCCXVIII
- Binary
- 10100100110
- Octal
- 2446
- Hexadecimal
- 526
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1318, here are decompositions:
- 11 + 1307 = 1318
- 17 + 1301 = 1318
- 29 + 1289 = 1318
- 41 + 1277 = 1318
- 59 + 1259 = 1318
- 89 + 1229 = 1318
- 101 + 1217 = 1318
- 131 + 1187 = 1318
Showing the first eight; more decompositions exist.
Unicode codepoint
Ԧ
U+0526
Uppercase letter (Lu)
UTF-8 encoding: D4 A6 (2 bytes).
Hex color
#000526
RGB(0, 5, 38)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.38.