18330998 has 24 divisors (see below), whose sum is σ = 33870312. Its totient is φ = 7393344.

The previous prime is 18330979. The next prime is 18331003. The reversal of 18330998 is 89903381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3836 + ... + 7167.

It is an arithmetic number, because the mean of its divisors is an integer number (1411263).

Almost surely, 2^18330998 is an apocalyptic number.

18330998 is a deficient number, since it is larger than the sum of its proper divisors (15539314).

18330998 is a wasteful number, since it uses less digits than its factorization.

18330998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036 (or 11029 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 18330998 is about 4281.4714760232. The cubic root of 18330998 is about 263.6707998760.

The spelling of 18330998 in words is "eighteen million, three hundred thirty thousand, nine hundred ninety-eight".