18368685036 has 72 divisors (see below), whose sum is σ = 51567628560. Its totient is φ = 5651897472.

The previous prime is 18368685029. The next prime is 18368685077. The reversal of 18368685036 is 63058686381.

18368685036 is a `hidden beast` number, since 18 + 3 + 68 + 68 + 503 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 484945 + ... + 521448.

Almost surely, 2^18368685036 is an apocalyptic number.

It is an amenable number.

18368685036 is an abundant number, since it is smaller than the sum of its proper divisors (33198943524).

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

18368685036 is a wasteful number, since it uses less digits than its factorization.

18368685036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006432 (or 1006411 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 18368685036 in words is "eighteen billion, three hundred sixty-eight million, six hundred eighty-five thousand, thirty-six".