18330790 has 8 divisors (see below), whose sum is σ = 32995440. Its totient is φ = 7332312.

The previous prime is 18330787. The next prime is 18330803. The reversal of 18330790 is 9703381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916530 + ... + 916549.

It is an arithmetic number, because the mean of its divisors is an integer number (4124430).

Almost surely, 2^18330790 is an apocalyptic number.

18330790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18330790 is a deficient number, since it is larger than the sum of its proper divisors (14664650).

18330790 is a wasteful number, since it uses less digits than its factorization.

18330790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833086.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 18330790 is about 4281.4471852401. The cubic root of 18330790 is about 263.6698025902.

The spelling of 18330790 in words is "eighteen million, three hundred thirty thousand, seven hundred ninety".