18943105604 has 12 divisors (see below), whose sum is σ = 33549838224. Its totient is φ = 9357437544.

The previous prime is 18943105591. The next prime is 18943105607. The reversal of 18943105604 is 40650134981.

It is not an unprimeable number, because it can be changed into a prime (18943105607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28528442 + ... + 28529105.

It is an arithmetic number, because the mean of its divisors is an integer number (2795819852).

Almost surely, 2^18943105604 is an apocalyptic number.

It is an amenable number.

18943105604 is a deficient number, since it is larger than the sum of its proper divisors (14606732620).

18943105604 is a wasteful number, since it uses less digits than its factorization.

18943105604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57057634 (or 57057632 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 18943105604 in words is "eighteen billion, nine hundred forty-three million, one hundred five thousand, six hundred four".