Number

16,481

16,481 is a prime, odd.

Arithmetic Number Chen Prime Cousin Prime Deficient Number Emirp Evil Number Prime Pythagorean Prime Recamán's Sequence Sexy Prime Squarefree

Properties

Parity: Odd
Digit count: 5
Digit sum: 20
Digit product: 192
Digital root: 2
Palindrome: No
Bit width: 15 bits
Reversed: 18,461
Recamán's sequence: a(44,997) = 16,481
Square (n²): 271,623,361
Cube (n³): 4,476,624,612,641
Divisor count: 2
σ(n) — sum of divisors: 16,482
φ(n) — Euler's totient: 16,480

Primality

16,481 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 16481

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 16,481)

1 × 16481

First multiples

16,481 · 32,962 (double) · 49,443 · 65,924 · 82,405 · 98,886 · 115,367 · 131,848 · 148,329 · 164,810

Sums & aliquot sequence

As a sum of two squares: 55² + 116²

As consecutive integers: 8,240 + 8,241

Representations

In words: sixteen thousand four hundred eighty-one
Ordinal: 16481st
Binary: 100000001100001
Octal: 40141
Hexadecimal: 0x4061
Base64: QGE=
One's complement: 49,054 (16-bit)

In other bases

ternary (3) 211121102

quaternary (4) 10001201

quinary (5) 1011411

senary (6) 204145

septenary (7) 66023

nonary (9) 24542

undecimal (11) 11423

duodecimal (12) 9655

tridecimal (13) 766a

tetradecimal (14) 6013

pentadecimal (15) 4d3b

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵ιϛυπαʹ
Mayan (base 20): 𝋢·𝋡·𝋤·𝋡
Chinese: 一萬六千四百八十一
Chinese (financial): 壹萬陸仟肆佰捌拾壹

In other modern scripts

Eastern Arabic ١٦٤٨١ Devanagari १६४८१ Bengali ১৬৪৮১ Tamil ௧௬௪௮௧ Thai ๑๖๔๘๑ Tibetan ༡༦༤༨༡ Khmer ១៦៤៨១ Lao ໑໖໔໘໑ Burmese ၁၆၄၈၁

Digit at this position in famous constants

π — Pi (π): Digit 16,481 = 1
e — Euler's number (e): Digit 16,481 = 6
φ — Golden ratio (φ): Digit 16,481 = 3
√2 — Pythagoras's (√2): Digit 16,481 = 3
ln 2 — Natural log of 2: Digit 16,481 = 9
γ — Euler-Mascheroni (γ): Digit 16,481 = 8

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 16,477 (gap of 4)
Next prime: 16,487 (gap of 6)

Pair status: cousin with 16477, sexy with 16487.

Unicode codepoint

䁡

CJK Unified Ideograph-4061

U+4061

Other letter (Lo)

UTF-8 encoding: E4 81 A1 (3 bytes).

Lookup U+4061 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#004061

RGB(0, 64, 97)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.97.

Address: 0.0.64.97
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.64.97

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 16481 first appears in π at position 183,650 of the decimal expansion (the 183,650ordinal-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.

Look up 16481 on Pi Search ↗