Properties of the Number 2186

Two Thousand One Hundred Eighty-Six

Basics

Value: 2185 → 2186 → 2187

Parity: even

Prime: No

Previous Prime: 2179

Next Prime: 2203

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 1093

Divisors: 1, 2, 1093, 2186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100010001010

Octal: 4212

Duodecimal: 1322

Hexadecimal: 88a

Square: 4778596

Square Root: 46.75467891024384

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

a(n) = 3ⁿ - 1. A24023

Write 1,2,... in a clockwise spiral; sequence gives numbers on positive·axis. A33951

Numbers of the form 3^m - 1 or 2·3^m - 1; i.e., the union of sequences A048473 and A024023. A62318

Zero together with the numbers which can be written as a sum of distinct odd powers of 2. A62880

a(n) = 2·a(n-1) - 2·a(n-3) + a(n-4) for n > 3, with initial terms 1, 1, 4, 8. A267682

Array of values of Jordan function J_k(n) read by antidiagonals (version 1). A59379

Array of values of Jordan function J_k(n) read by antidiagonals (version 2). A59380

Triangle of f-vectors of the simplicial complexes dual to the permutohedra of type B_n. A145901

a(n) = 3·n² - 1. A80663

Numbers k such that φ(k) = φ(k+2). A1494