18098504 has 8 divisors (see below), whose sum is σ = 33934710. Its totient is φ = 9049248.

The previous prime is 18098501. The next prime is 18098519. The reversal of 18098504 is 40589081.

It can be written as a sum of positive squares in only one way, i.e., 12945604 + 5152900 = 3598^2 + 2270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18098501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1131149 + ... + 1131164.

Almost surely, 2^18098504 is an apocalyptic number.

It is an amenable number.

18098504 is a deficient number, since it is larger than the sum of its proper divisors (15836206).

18098504 is a wasteful number, since it uses less digits than its factorization.

18098504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262319 (or 2262315 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18098504 is about 4254.2336560184. The cubic root of 18098504 is about 262.5513320626.

The spelling of 18098504 in words is "eighteen million, ninety-eight thousand, five hundred four".