18449005928 has 16 divisors (see below), whose sum is σ = 36412512000. Its totient is φ = 8739002736.

The previous prime is 18449005919. The next prime is 18449005933. The reversal of 18449005928 is 82950094481.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60687368 + ... + 60687671.

It is an arithmetic number, because the mean of its divisors is an integer number (2275782000).

Almost surely, 2^18449005928 is an apocalyptic number.

It is an amenable number.

18449005928 is a deficient number, since it is larger than the sum of its proper divisors (17963506072).

18449005928 is a wasteful number, since it uses less digits than its factorization.

18449005928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121375064 (or 121375060 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 18449005928 in words is "eighteen billion, four hundred forty-nine million, five thousand, nine hundred twenty-eight".