Properties of the Number 16185

Sixteen Thousand One Hundred Eighty-Five

Basics

Value: 16184 → 16185 → 16186

Parity: odd

Prime: No

Previous Prime: 16183

Next Prime: 16187

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 13 × 83

Divisors: 1, 3, 5, 13, 15, 39, 65, 83, 195, 249

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11111100111001

Octal: 37471

Duodecimal: 9449

Hexadecimal: 3f39

Square: 261954225

Square Root: 127.22028140198401

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

Odd composite integers m such that A014448(m) == 4 (mod m). A335670

a(n) = 14·n² + 1. A158482

Number of narrowly recursively normal integer partitions of n. A332272

4·a(n) is the maximum possible determinant of a 3 X 3 matrix whose entries are 9 consecutive primes starting with prime(n). A340923

Smallest k such that the fundamental unit (x+y·w) or (x+y·w)/2 of the real quadratic field Q(sqrt(k)) obeys gcd(k,y)=n. A197170

Products p·q*r·s of distinct primes for which (p·q*r·s + 1)/2 is prime. A234501

Number of partitions of n such that 4*(smallest part) = (number of parts). A350896

a(n) = 56·n² + 1. A158660

a(n) is the smallest integer k such that sigma₂(k) = sigma₂(k + 2n), where sigma₂(k) is the sum of squares of divisors of k (A001157). A175199

Series reversion of (sqrt(1+4·x) - 1)/2 - x³. A229043