18898908 has 36 divisors (see below), whose sum is σ = 51298632. Its totient is φ = 5399520.

The previous prime is 18898861. The next prime is 18898921. The reversal of 18898908 is 80989881.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15483 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (1424962).

Almost surely, 2^18898908 is an apocalyptic number.

It is an amenable number.

18898908 is an abundant number, since it is smaller than the sum of its proper divisors (32399724).

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

18898908 is a wasteful number, since it uses less digits than its factorization.

18898908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32162 (or 32153 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 51.

The square root of 18898908 is about 4347.2874301109. The cubic root of 18898908 is about 266.3660703120.

The spelling of 18898908 in words is "eighteen million, eight hundred ninety-eight thousand, nine hundred eight".