Zahl

1

1 — One

1 is odd, a calendar year.

One is the multiplicative identity. It is the only positive integer that is neither prime nor composite, and is the first and second number in the Fibonacci sequence.

Quellen https://en.wikipedia.org/wiki/1

Catalan Number Curated Deficient Number Factorial Fibonacci Flippable Happy Number Harshad / Niven Heptagonal Hexagonal Kaprekar Number Lucas Narcissistic / Armstrong Octagonal Pentagonal Perfect Cube Perfect Square Power of Ten Power of Two Recamán's Sequence Repunit Strobogrammatic Triangular

Eigenschaften

Parität: Ungerade
Stellenanzahl: 1
Quersumme: 1
Iterierte Quersumme: 1
Palindrom: Ja
Recamán-Folge: a(1) = 1
Anzahl der Teiler: 1
σ(n) — Summe der Teiler: 1

Teiler und Vielfache

All divisors (1)

Aliquot sum (sum of proper divisors): 0

Factor pairs (a × b = 1)

1 × 1

First multiples

1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10

Darstellungen

In Worten: one
Ordinal: 1st
Römische Zahl: I
Binär: 1
Oktal: 1
Hexadezimal: 0x1
Base64: AQ==

Auch zu sehen als

ASCII character

As an ASCII codepoint, 1 is control character (0x01). ASCII control character.

Hex color

#000001

RGB(0, 0, 1)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.1.

Address: 0.0.0.1
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.1

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