18908116 has 48 divisors (see below), whose sum is σ = 37699200. Its totient is φ = 8249472.

The previous prime is 18908111. The next prime is 18908117. The reversal of 18908116 is 61180981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18908111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50506 + ... + 50878.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^18908116 is an apocalyptic number.

It is an amenable number.

18908116 is a deficient number, since it is larger than the sum of its proper divisors (18791084).

18908116 is a wasteful number, since it uses less digits than its factorization.

18908116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 18908116 is about 4348.3463523505. The cubic root of 18908116 is about 266.4093232616.

The spelling of 18908116 in words is "eighteen million, nine hundred eight thousand, one hundred sixteen".