Properties of the Number -188461

One Hundred Eighty-Eight Thousand Four Hundred Sixty-One

Basics

Value: -188462 → -188461 → -188460

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 7 × 13 × 19 × 109

Divisors: 1, 7, 13, 19, 91, 109, 133, 247, 763, 1417

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101110000000101101

Octal: -560055

Duodecimal: -91091

Hexadecimal: -2e02d

Square: 35517548521

Square Root: 434.12095088811367

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Carmichael numbers: composite numbers k such that a^k-1 == 1 (mod k) for every a coprime to k. A2997

Pseudoprimes to both base 2 and base 3, i.e., intersection of A001567 and A005935. A52155

Pseudoprimes to bases 2, 3 and 5. A83737

Carmichael numbers with exactly 4 prime factors. A74379

Composite numbers n such that gcd(φ(n), n-1) = λ(n), where λ(n) = A002322(n). A264012

Carmichael numbers with more than 3 prime factors. A141711

Carmichael numbers ending in 1. A354609

Devaraj numbers: squarefree r-prime-factor (r>1) integers N=p1*...*pr such that φ(N)=(p1-1)*...*(pr-1) divides gcd(p1-1,...,pr-1)²*(N-1)^r-2. A104016

a(n) is the smallest Carmichael number (A002997) divisible by the n-th prime, or 0 if no such number exists. A135721

Carmichael numbers (A002997) that are not absolute Euler pseudoprimes (A033181). A262043