18903316 has 12 divisors (see below), whose sum is σ = 33850432. Its totient is φ = 9231768.

The previous prime is 18903307. The next prime is 18903319. The reversal of 18903316 is 61330981.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18903319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54780 + ... + 55123.

Almost surely, 2^18903316 is an apocalyptic number.

It is an amenable number.

18903316 is a deficient number, since it is larger than the sum of its proper divisors (14947116).

18903316 is a wasteful number, since it uses less digits than its factorization.

18903316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109950 (or 109948 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 18903316 is about 4347.7943833627. The cubic root of 18903316 is about 266.3867778640.

The spelling of 18903316 in words is "eighteen million, nine hundred three thousand, three hundred sixteen".