18160131 has 16 divisors (see below), whose sum is σ = 27969408. Its totient is φ = 10358400.

The previous prime is 18160123. The next prime is 18160157. The reversal of 18160131 is 13106181.

It is not a de Polignac number, because 18160131 - 2³ = 18160123 is a prime.

It is a super-2 number, since 2×18160131² = 659580715874322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18160098 and 18160107.

It is not an unprimeable number, because it can be changed into a prime (18160031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15625 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (1748088).

Almost surely, 2^18160131 is an apocalyptic number.

18160131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18160131 is a deficient number, since it is larger than the sum of its proper divisors (9809277).

18160131 is a wasteful number, since it uses less digits than its factorization.

18160131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32402.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 18160131 is about 4261.4705208414. The cubic root of 18160131 is about 262.8489979276.

The spelling of 18160131 in words is "eighteen million, one hundred sixty thousand, one hundred thirty-one".