18038464 has 28 divisors (see below), whose sum is σ = 37033200. Its totient is φ = 8707328.

The previous prime is 18038453. The next prime is 18038533. The reversal of 18038464 is 46483081.

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, 3004 + ... + 6715.

Almost surely, 2^18038464 is an apocalyptic number.

It is an amenable number.

18038464 is an abundant number, since it is smaller than the sum of its proper divisors (18994736).

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

18038464 is an equidigital number, since it uses as much as digits as its factorization.

18038464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9760 (or 9750 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 18038464 is about 4247.1712939320. The cubic root of 18038464 is about 262.2606810499.

The spelling of 18038464 in words is "eighteen million, thirty-eight thousand, four hundred sixty-four".