13,018
13,018 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 81,031
- Recamán's sequence
- a(48,239) = 13,018
- Square (n²)
- 169,468,324
- Cube (n³)
- 2,206,138,641,832
- Divisor count
- 8
- σ(n) — sum of divisors
- 20,448
- φ(n) — Euler's totient
- 6,204
- Sum of prime factors
- 308
Primality
Prime factorization: 2 × 23 × 283
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- thirteen thousand eighteen
- Ordinal
- 13018th
- Binary
- 11001011011010
- Octal
- 31332
- Hexadecimal
- 0x32DA
- Base64
- Mto=
- One's complement
- 52,517 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγιηʹ
- Mayan (base 20)
- 𝋡·𝋬·𝋪·𝋲
- Chinese
- 一萬三千零一十八
- Chinese (financial)
- 壹萬參仟零壹拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,018 = 9
- e — Euler's number (e)
- Digit 13,018 = 5
- φ — Golden ratio (φ)
- Digit 13,018 = 0
- √2 — Pythagoras's (√2)
- Digit 13,018 = 9
- ln 2 — Natural log of 2
- Digit 13,018 = 8
- γ — Euler-Mascheroni (γ)
- Digit 13,018 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13018, here are decompositions:
- 11 + 13007 = 13018
- 17 + 13001 = 13018
- 59 + 12959 = 13018
- 101 + 12917 = 13018
- 107 + 12911 = 13018
- 197 + 12821 = 13018
- 227 + 12791 = 13018
- 347 + 12671 = 13018
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 8B 9A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.50.218.
- Address
- 0.0.50.218
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.50.218
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 13018 first appears in π at position 17,473 of the decimal expansion (the 17,473ordinal-suffix:rd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.