18901905004 has 6 divisors (see below), whose sum is σ = 33078333764. Its totient is φ = 9450952500.

The previous prime is 18901904947. The next prime is 18901905007. The reversal of 18901905004 is 40050910981.

It is not an unprimeable number, because it can be changed into a prime (18901905007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2362738122 + ... + 2362738129.

Almost surely, 2^18901905004 is an apocalyptic number.

It is an amenable number.

18901905004 is a deficient number, since it is larger than the sum of its proper divisors (14176428760).

18901905004 is a wasteful number, since it uses less digits than its factorization.

18901905004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725476255 (or 4725476253 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 18901905004 in words is "eighteen billion, nine hundred one million, nine hundred five thousand, four".