8,164
8,164 is a composite number, even.
8,164 (eight thousand one hundred sixty-four) is an even 4-digit number. It is a composite number with 12 divisors, and factors as 2² × 13 × 157. Written other ways, in hexadecimal, 0x1FE4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 19
- Digit product
- 192
- Digital root
- 1
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 4,618
- Recamán's sequence
- a(10,439) = 8,164
- Square (n²)
- 66,650,896
- Cube (n³)
- 544,137,914,944
- Divisor count
- 12
- σ(n) — sum of divisors
- 15,484
- φ(n) — Euler's totient
- 3,744
- Sum of prime factors
- 174
Primality
Prime factorization: 2 2 × 13 × 157
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√8,164 = [90; (2, 1, 4, 2, 59, 1, 3, 1, 1, 1, 6, 19, 1, 12, 1, 19, 6, 1, 1, 1, 3, 1, 59, 2, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- eight thousand one hundred sixty-four
- Ordinal
- 8164th
- Binary
- 1111111100100
- Octal
- 17744
- Hexadecimal
- 0x1FE4
- Base64
- H+Q=
- One's complement
- 57,371 (16-bit)
- Scientific notation
- 8.164 × 10³
- As a duration
- 8,164 s = 2 hours, 16 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ηρξδʹ
- Mayan (base 20)
- 𝋡·𝋠·𝋨·𝋤
- Chinese
- 八千一百六十四
- Chinese (financial)
- 捌仟壹佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 8,164 = 8
- e — Euler's number (e)
- Digit 8,164 = 7
- φ — Golden ratio (φ)
- Digit 8,164 = 4
- √2 — Pythagoras's (√2)
- Digit 8,164 = 1
- ln 2 — Natural log of 2
- Digit 8,164 = 6
- γ — Euler-Mascheroni (γ)
- Digit 8,164 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8164, here are decompositions:
- 3 + 8161 = 8164
- 17 + 8147 = 8164
- 41 + 8123 = 8164
- 47 + 8117 = 8164
- 53 + 8111 = 8164
- 71 + 8093 = 8164
- 83 + 8081 = 8164
- 227 + 7937 = 8164
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 BF A4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.31.228.
- Address
- 0.0.31.228
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.31.228
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 8,164 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C9 (8372 Hz, -44¢)
- Scientific pitch (C4 = 256 Hz): C9 (8192 Hz, -6¢)
- Baroque pitch (A4 = 415 Hz): C♯9 (8365.9 Hz, -42¢)
The digit sequence 8164 first appears in π at position 67 of the decimal expansion (the 67ordinal-suffix:th 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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.