18356004864 has 480 divisors, whose sum is σ = 60791290560. Its totient is φ = 5488902144.

The previous prime is 18356004853. The next prime is 18356004889. The reversal of 18356004864 is 46840065381.

18356004864 is a `hidden beast` number, since 1 + 8 + 3 + 560 + 0 + 4 + 86 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 64862067 + ... + 64862349.

It is an arithmetic number, because the mean of its divisors is an integer number (126648522).

Almost surely, 2^18356004864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18356004864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30395645280).

18356004864 is an abundant number, since it is smaller than the sum of its proper divisors (42435285696).

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

18356004864 is a wasteful number, since it uses less digits than its factorization.

18356004864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 18356004864 in words is "eighteen billion, three hundred fifty-six million, four thousand, eight hundred sixty-four".