18908288008 has 16 divisors (see below), whose sum is σ = 35454937680. Its totient is φ = 9453637968.

The previous prime is 18908287991. The next prime is 18908288023. The reversal of 18908288008 is 80088280981.

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, 130435 + ... + 234157.

It is an arithmetic number, because the mean of its divisors is an integer number (2215933605).

Almost surely, 2^18908288008 is an apocalyptic number.

It is an amenable number.

18908288008 is a deficient number, since it is larger than the sum of its proper divisors (16546649672).

18908288008 is a wasteful number, since it uses less digits than its factorization.

18908288008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126516 (or 126512 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 52.

It can be divided in two parts, 18908 and 288008, that added together give a square (306916 = 554²).

The spelling of 18908288008 in words is "eighteen billion, nine hundred eight million, two hundred eighty-eight thousand, eight".