Properties of the Number 18397

Eighteen Thousand Three Hundred Ninety-Seven

Basics

Value: 18396 → 18397 → 18398

Parity: odd

Prime: Yes

Previous Prime: 18379

Next Prime: 18401

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 18397

Divisors: 1, 18397

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011111011101

Octal: 43735

Duodecimal: A791

Hexadecimal: 47dd

Square: 338449609

Square Root: 135.63554106501732

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

List of Ormiston prime pairs. A72274

Smaller member of a pair (p,q) of cousin primes such that p and q are in different centuries. A160440

Primes p of the form 4·k+1 for which s=26 is the least positive integer such that s·p-(floor(sqrt(s·p)))² is a square. A145050

Primes of form 5+38·n². A173554

Numbers n such that n and n+4^k are all primes for k=1,2,3. A49493

a(n) = [B(2n,5)/B(2n)] ( [x] = floor(x), see comment for B(n,k) definition ). A96049

a(n) = n·prime(prime(n)) - prime(n). A230285

Denominators of continued fraction convergents to sqrt(617). A42185

Leading diagonal of triangle in A072467. A72468

a(2·n), a(2·n+1) is the smallest consecutive prime pairs with at least n distinct common decimal digits. A76491