18613406604 has 48 divisors (see below), whose sum is σ = 48805731072. Its totient is φ = 5478192192.

The previous prime is 18613406599. The next prime is 18613406611. The reversal of 18613406604 is 40660431681.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590254 + ... + 2597429.

It is an arithmetic number, because the mean of its divisors is an integer number (1016786064).

Almost surely, 2^18613406604 is an apocalyptic number.

It is an amenable number.

18613406604 is an abundant number, since it is smaller than the sum of its proper divisors (30192324468).

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

18613406604 is a wasteful number, since it uses less digits than its factorization.

18613406604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187726 (or 5187724 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 18613406604 in words is "eighteen billion, six hundred thirteen million, four hundred six thousand, six hundred four".