18038484 has 24 divisors (see below), whose sum is σ = 46766720. Its totient is φ = 6012792.

The previous prime is 18038453. The next prime is 18038533. The reversal of 18038484 is 48483081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 83404 + ... + 83619.

Almost surely, 2^18038484 is an apocalyptic number.

It is an amenable number.

18038484 is an abundant number, since it is smaller than the sum of its proper divisors (28728236).

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

18038484 is a wasteful number, since it uses less digits than its factorization.

18038484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167036 (or 167028 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 18038484 is about 4247.1736484396. The cubic root of 18038484 is about 262.2607779763.

The spelling of 18038484 in words is "eighteen million, thirty-eight thousand, four hundred eighty-four".