18500417672 has 16 divisors (see below), whose sum is σ = 37841763600. Its totient is φ = 8409280720.

The previous prime is 18500417657. The next prime is 18500417681. The reversal of 18500417672 is 27671400581.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105115922 + ... + 105116097.

It is an arithmetic number, because the mean of its divisors is an integer number (2365110225).

Almost surely, 2^18500417672 is an apocalyptic number.

It is an amenable number.

18500417672 is an abundant number, since it is smaller than the sum of its proper divisors (19341345928).

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

18500417672 is a wasteful number, since it uses less digits than its factorization.

18500417672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210232036 (or 210232032 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The spelling of 18500417672 in words is "eighteen billion, five hundred million, four hundred seventeen thousand, six hundred seventy-two".