18005968 has 20 divisors (see below), whose sum is σ = 35087040. Its totient is φ = 8951264.

The previous prime is 18005963. The next prime is 18005969. The reversal of 18005968 is 86950081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005963) by changing a digit.

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, 280 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (1754352).

Almost surely, 2^18005968 is an apocalyptic number.

It is an amenable number.

18005968 is a deficient number, since it is larger than the sum of its proper divisors (17081072).

18005968 is a wasteful number, since it uses less digits than its factorization.

18005968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474 (or 6468 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 18005968 is about 4243.3439643753. The cubic root of 18005968 is about 262.1031002660.

The spelling of 18005968 in words is "eighteen million, five thousand, nine hundred sixty-eight".