18098808 has 64 divisors (see below), whose sum is σ = 55695360. Its totient is φ = 4772736.

The previous prime is 18098797. The next prime is 18098819. The reversal of 18098808 is 80889081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18098797) and next prime (18098819).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 18098808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1960 + ... + 6327.

It is an arithmetic number, because the mean of its divisors is an integer number (870240).

Almost surely, 2^18098808 is an apocalyptic number.

It is an amenable number.

18098808 is an abundant number, since it is smaller than the sum of its proper divisors (37596552).

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

18098808 is a wasteful number, since it uses less digits than its factorization.

18098808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8316 (or 8312 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The square root of 18098808 is about 4254.2693849826. The cubic root of 18098808 is about 262.5528020765.

The spelling of 18098808 in words is "eighteen million, ninety-eight thousand, eight hundred eight".