138,164
138,164 is a composite number, even.
138,164 (one hundred thirty-eight thousand one hundred sixty-four) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 13 × 2,657. Written other ways, in hexadecimal, 0x21BB4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 576
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 461,831
- Recamán's sequence
- a(492,499) = 138,164
- Square (n²)
- 19,089,290,896
- Cube (n³)
- 2,637,452,787,354,944
- Divisor count
- 12
- σ(n) — sum of divisors
- 260,484
- φ(n) — Euler's totient
- 63,744
- Sum of prime factors
- 2,674
Primality
Prime factorization: 2 2 × 13 × 2657
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,164 = [371; (1, 2, 2, 1, 1, 1, 2, 4, 2, 1, 4, 1, 1, 29, 5, 3, 5, 1, 1, 5, 1, 1, 1, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred sixty-four
- Ordinal
- 138164th
- Binary
- 100001101110110100
- Octal
- 415664
- Hexadecimal
- 0x21BB4
- Base64
- Ahu0
- One's complement
- 4,294,829,131 (32-bit)
- Scientific notation
- 1.38164 × 10⁵
- As a duration
- 138,164 s = 1 day, 14 hours, 22 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληρξδʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋨·𝋤
- Chinese
- 一十三萬八千一百六十四
- Chinese (financial)
- 壹拾參萬捌仟壹佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138164, here are decompositions:
- 7 + 138157 = 138164
- 157 + 138007 = 138164
- 181 + 137983 = 138164
- 223 + 137941 = 138164
- 337 + 137827 = 138164
- 373 + 137791 = 138164
- 421 + 137743 = 138164
- 457 + 137707 = 138164
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AE B4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.180.
- Address
- 0.2.27.180
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.180
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 138,164 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138164 first appears in π at position 69,063 of the decimal expansion (the 69,063ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.