18339908 has 12 divisors (see below), whose sum is σ = 32700780. Its totient is φ = 8996832.

The previous prime is 18339899. The next prime is 18339911. The reversal of 18339908 is 80993381.

It can be written as a sum of positive squares in 2 ways, for example, as 8655364 + 9684544 = 2942^2 + 3112^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43043 + ... + 43466.

It is an arithmetic number, because the mean of its divisors is an integer number (2725065).

Almost surely, 2^18339908 is an apocalyptic number.

It is an amenable number.

18339908 is a deficient number, since it is larger than the sum of its proper divisors (14360872).

18339908 is a wasteful number, since it uses less digits than its factorization.

18339908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86566 (or 86564 counting only the distinct ones).

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

The square root of 18339908 is about 4282.5118797267. The cubic root of 18339908 is about 263.7135130677.

The spelling of 18339908 in words is "eighteen million, three hundred thirty-nine thousand, nine hundred eight".