18368790 has 32 divisors (see below), whose sum is σ = 48093696. Its totient is φ = 4452960.

The previous prime is 18368767. The next prime is 18368821. The reversal of 18368790 is 9786381.

It is a super-3 number, since 3×18368790³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27502 + ... + 28161.

It is an arithmetic number, because the mean of its divisors is an integer number (1502928).

Almost surely, 2^18368790 is an apocalyptic number.

18368790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18368790 is an abundant number, since it is smaller than the sum of its proper divisors (29724906).

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

18368790 is a wasteful number, since it uses less digits than its factorization.

18368790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55684.

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

The square root of 18368790 is about 4285.8826395505. The cubic root of 18368790 is about 263.8518739752.

The spelling of 18368790 in words is "eighteen million, three hundred sixty-eight thousand, seven hundred ninety".