18898004 has 12 divisors (see below), whose sum is σ = 33229728. Its totient is φ = 9403800.

The previous prime is 18897971. The next prime is 18898037. The reversal of 18898004 is 40089881.

It is an interprime number because it is at equal distance from previous prime (18897971) and next prime (18898037).

It is a congruent 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, 10352 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (2769144).

Almost surely, 2^18898004 is an apocalyptic number.

It is an amenable number.

18898004 is a deficient number, since it is larger than the sum of its proper divisors (14331724).

18898004 is a wasteful number, since it uses less digits than its factorization.

18898004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22606 (or 22604 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 18898004 is about 4347.1834559862. The cubic root of 18898004 is about 266.3618231747.

The spelling of 18898004 in words is "eighteen million, eight hundred ninety-eight thousand, four".