Properties of the Number -18493

Eighteen Thousand Four Hundred Ninety-Three

Basics

Value: -18494 → -18493 → -18492

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 18493

Divisors: 1, 18493

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100000111101

Octal: -44075

Duodecimal: -A851

Hexadecimal: -483d

Square: 341991049

Square Root: 135.988970140964

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

Numbers whose square with its last digit deleted is also a square. A31149

Class 6+ primes. A81634

a(n) = ∑_k=1..n T(n,k), array T as in A049790. A49791

Primes p such that p1=Floor[p/2]+p is prime and p2=Ceiling[p1/2]+p1 is prime. A158712

Prime p1 of consecutive primes p1, p2, where p2-p1=10, and p1, p2 are in different centuries. A160500

Primes of form k² - 3. A28874

a()=A037260 and its first [ A037261 ], 2nd [ A037262 ] and 3rd [ A037263 ] differences together include every number at most once and are monotonic and minimal. A37260

Primes p such that the decimal digits of p² can be partitioned into two or more nonzero squares. A48646

Primes p that divide Fibonacci[(p+1)/7]. A125252

Number of 4-connected polyhedral graphs with n nodes. A7027