18330494 has 64 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 6652800.

The previous prime is 18330479. The next prime is 18330509. The reversal of 18330494 is 49403381.

It is an interprime number because it is at equal distance from previous prime (18330479) and next prime (18330509).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18330494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121319 + ... + 121469.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^18330494 is an apocalyptic number.

18330494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18330494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

18330494 is a wasteful number, since it uses less digits than its factorization.

18330494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 18330494 is about 4281.4126173496. The cubic root of 18330494 is about 263.6683833627.

The spelling of 18330494 in words is "eighteen million, three hundred thirty thousand, four hundred ninety-four".