18065900 has 36 divisors (see below), whose sum is σ = 41512968. Its totient is φ = 6800640.

The previous prime is 18065897. The next prime is 18065909. The reversal of 18065900 is 956081.

It is not an unprimeable number, because it can be changed into a prime (18065909) 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 11 ways as a sum of consecutive naturals, for example, 3614 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (1153138).

Almost surely, 2^18065900 is an apocalyptic number.

18065900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18065900 is an abundant number, since it is smaller than the sum of its proper divisors (23447068).

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

18065900 is a wasteful number, since it uses less digits than its factorization.

18065900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658 (or 10651 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18065900 is about 4250.3999811782. The cubic root of 18065900 is about 262.3935774194.

The spelling of 18065900 in words is "eighteen million, sixty-five thousand, nine hundred".