18098992 has 20 divisors (see below), whose sum is σ = 35220960. Its totient is φ = 9009728.

The previous prime is 18098923. The next prime is 18099007. The reversal of 18098992 is 29989081.

It is a happy number.

It is a super-2 number, since 2×18098992² = 655147022832128, which contains 22 as substring.

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, 1458 + ... + 6190.

It is an arithmetic number, because the mean of its divisors is an integer number (1761048).

Almost surely, 2^18098992 is an apocalyptic number.

It is an amenable number.

18098992 is a deficient number, since it is larger than the sum of its proper divisors (17121968).

18098992 is a wasteful number, since it uses less digits than its factorization.

18098992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 18098992 is about 4254.2910102625. The cubic root of 18098992 is about 262.5536918138.

It can be divided in two parts, 1809 and 8992, that added together give a palindrome (10801).

The spelling of 18098992 in words is "eighteen million, ninety-eight thousand, nine hundred ninety-two".