18157036 has 12 divisors (see below), whose sum is σ = 31833928. Its totient is φ = 9061632.

The previous prime is 18157031. The next prime is 18157039. The reversal of 18157036 is 63075181.

It is a junction number, because it is equal to n+sod(n) for n = 18156989 and 18157007.

It is not an unprimeable number, because it can be changed into a prime (18157031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1626 + ... + 6241.

Almost surely, 2^18157036 is an apocalyptic number.

It is an amenable number.

18157036 is a deficient number, since it is larger than the sum of its proper divisors (13676892).

18157036 is a wasteful number, since it uses less digits than its factorization.

18157036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448 (or 8446 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 18157036 is about 4261.1073678095. The cubic root of 18157036 is about 262.8340647778.

The spelling of 18157036 in words is "eighteen million, one hundred fifty-seven thousand, thirty-six".