18908768 has 12 divisors (see below), whose sum is σ = 37226700. Its totient is φ = 9454368.

The previous prime is 18908767. The next prime is 18908779. The reversal of 18908768 is 86780981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18908767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295418 + ... + 295481.

It is an arithmetic number, because the mean of its divisors is an integer number (3102225).

Almost surely, 2^18908768 is an apocalyptic number.

It is an amenable number.

18908768 is a deficient number, since it is larger than the sum of its proper divisors (18317932).

18908768 is an equidigital number, since it uses as much as digits as its factorization.

18908768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590909 (or 590901 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 18908768 is about 4348.4213227331. The cubic root of 18908768 is about 266.4123853837.

The spelling of 18908768 in words is "eighteen million, nine hundred eight thousand, seven hundred sixty-eight".