18356136 has 16 divisors (see below), whose sum is σ = 45890400. Its totient is φ = 6118704.

The previous prime is 18356131. The next prime is 18356137. The reversal of 18356136 is 63165381.

It is a junction number, because it is equal to n+sod(n) for n = 18356097 and 18356106.

It is not an unprimeable number, because it can be changed into a prime (18356131) 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, 382396 + ... + 382443.

It is an arithmetic number, because the mean of its divisors is an integer number (2868150).

Almost surely, 2^18356136 is an apocalyptic number.

It is an amenable number.

18356136 is an abundant number, since it is smaller than the sum of its proper divisors (27534264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18356136 is a wasteful number, since it uses less digits than its factorization.

18356136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764848 (or 764844 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 18356136 is about 4284.4061432128. The cubic root of 18356136 is about 263.7912721140.

The spelling of 18356136 in words is "eighteen million, three hundred fifty-six thousand, one hundred thirty-six".