18898916 has 12 divisors (see below), whose sum is σ = 34511232. Its totient is φ = 9038568.

The previous prime is 18898861. The next prime is 18898921. The reversal of 18898916 is 61989881.

It is a happy number.

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, 102620 + ... + 102803.

It is an arithmetic number, because the mean of its divisors is an integer number (2875936).

Almost surely, 2^18898916 is an apocalyptic number.

It is an amenable number.

18898916 is a deficient number, since it is larger than the sum of its proper divisors (15612316).

18898916 is a wasteful number, since it uses less digits than its factorization.

18898916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205450 (or 205448 counting only the distinct ones).

The product of its digits is 248832, while the sum is 50.

The square root of 18898916 is about 4347.2883502248. The cubic root of 18898916 is about 266.3661078966.

The spelling of 18898916 in words is "eighteen million, eight hundred ninety-eight thousand, nine hundred sixteen".