18098604 has 36 divisors (see below), whose sum is σ = 46530120. Its totient is φ = 5929920.

The previous prime is 18098579. The next prime is 18098609. The reversal of 18098604 is 40689081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18098609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2137 + ... + 6384.

Almost surely, 2^18098604 is an apocalyptic number.

It is an amenable number.

18098604 is an abundant number, since it is smaller than the sum of its proper divisors (28431516).

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

18098604 is a wasteful number, since it uses less digits than its factorization.

18098604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8590 (or 8585 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 18098604 is about 4254.2454090003. The cubic root of 18098604 is about 262.5518156216.

The spelling of 18098604 in words is "eighteen million, ninety-eight thousand, six hundred four".