18624890664 has 96 divisors (see below), whose sum is σ = 50901776640. Its totient is φ = 6152025600.

The previous prime is 18624890653. The next prime is 18624890723. The reversal of 18624890664 is 46609842681.

18624890664 is a `hidden beast` number, since 1 + 8 + 624 + 8 + 9 + 0 + 6 + 6 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18624890664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3658729 + ... + 3663815.

It is an arithmetic number, because the mean of its divisors is an integer number (530226840).

Almost surely, 2^18624890664 is an apocalyptic number.

It is an amenable number.

18624890664 is an abundant number, since it is smaller than the sum of its proper divisors (32276885976).

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

18624890664 is a wasteful number, since it uses less digits than its factorization.

18624890664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 18624890664 in words is "eighteen billion, six hundred twenty-four million, eight hundred ninety thousand, six hundred sixty-four".