18056156 has 12 divisors (see below), whose sum is σ = 33261480. Its totient is φ = 8552880.

The previous prime is 18056149. The next prime is 18056179. The reversal of 18056156 is 65165081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118715 + ... + 118866.

It is an arithmetic number, because the mean of its divisors is an integer number (2771790).

Almost surely, 2^18056156 is an apocalyptic number.

It is an amenable number.

18056156 is a deficient number, since it is larger than the sum of its proper divisors (15205324).

18056156 is a wasteful number, since it uses less digits than its factorization.

18056156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237604 (or 237602 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 18056156 is about 4249.2535815129. The cubic root of 18056156 is about 262.3463941842.

The spelling of 18056156 in words is "eighteen million, fifty-six thousand, one hundred fifty-six".