18616310964 has 36 divisors (see below), whose sum is σ = 47417129760. Its totient is φ = 6158065680.

The previous prime is 18616310963. The next prime is 18616310969. The reversal of 18616310964 is 46901361681.

18616310964 is a `hidden beast` number, since 1 + 8 + 6 + 1 + 631 + 0 + 9 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18616310963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1969024 + ... + 1978455.

Almost surely, 2^18616310964 is an apocalyptic number.

It is an amenable number.

18616310964 is an abundant number, since it is smaller than the sum of its proper divisors (28800818796).

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

18616310964 is a wasteful number, since it uses less digits than its factorization.

18616310964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947620 (or 3947615 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 18616310964 in words is "eighteen billion, six hundred sixteen million, three hundred ten thousand, nine hundred sixty-four".