18992108 has 12 divisors (see below), whose sum is σ = 33441240. Its totient is φ = 9437472.

The previous prime is 18992107. The next prime is 18992123. The reversal of 18992108 is 80129981.

18992108 is nontrivially palindromic in base 14.

It is not an unprimeable number, because it can be changed into a prime (18992107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13913 + ... + 15216.

It is an arithmetic number, because the mean of its divisors is an integer number (2786770).

Almost surely, 2^18992108 is an apocalyptic number.

It is an amenable number.

18992108 is a deficient number, since it is larger than the sum of its proper divisors (14449132).

18992108 is a wasteful number, since it uses less digits than its factorization.

18992108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29296 (or 29294 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 18992108 is about 4357.9935750297. The cubic root of 18992108 is about 266.8032140963.

The spelling of 18992108 in words is "eighteen million, nine hundred ninety-two thousand, one hundred eight".