18097836 has 24 divisors (see below), whose sum is σ = 42347760. Its totient is φ = 6015552.

The previous prime is 18097817. The next prime is 18097889. The reversal of 18097836 is 63879081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2730 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1764490).

Almost surely, 2^18097836 is an apocalyptic number.

It is an amenable number.

18097836 is an abundant number, since it is smaller than the sum of its proper divisors (24249924).

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

18097836 is a wasteful number, since it uses less digits than its factorization.

18097836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273 (or 4271 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 18097836 is about 4254.1551452668. The cubic root of 18097836 is about 262.5481018426.

The spelling of 18097836 in words is "eighteen million, ninety-seven thousand, eight hundred thirty-six".