Number
2,018
2,018 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 11
- Digital root
- 2
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 3,030
Primality
Prime factorization: 2 × 1009
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,012
First multiples
Representations
- In words
- two thousand eighteen
- Ordinal
- 2018th
- Roman numeral
- MMXVIII
- Binary
- 11111100010
- Octal
- 3742
- Hexadecimal
- 7E2
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2018, here are decompositions:
- 7 + 2011 = 2018
- 19 + 1999 = 2018
- 31 + 1987 = 2018
- 67 + 1951 = 2018
- 139 + 1879 = 2018
- 151 + 1867 = 2018
- 157 + 1861 = 2018
- 229 + 1789 = 2018
Showing the first eight; more decompositions exist.
Unicode codepoint
ߢ
U+07E2
Other letter (Lo)
UTF-8 encoding: DF A2 (2 bytes).
Hex color
#0007E2
RGB(0, 7, 226)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.226.