18042884 has 12 divisors (see below), whose sum is σ = 31702608. Its totient is φ = 8985000.

The previous prime is 18042859. The next prime is 18042887. The reversal of 18042884 is 48824081.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18042887) 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 in 3 ways as a sum of consecutive naturals, for example, 7982 + ... + 9989.

It is an arithmetic number, because the mean of its divisors is an integer number (2641884).

Almost surely, 2^18042884 is an apocalyptic number.

It is an amenable number.

18042884 is a deficient number, since it is larger than the sum of its proper divisors (13659724).

18042884 is a wasteful number, since it uses less digits than its factorization.

18042884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18226 (or 18224 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 18042884 is about 4247.6916083916. The cubic root of 18042884 is about 262.2821000492.

The spelling of 18042884 in words is "eighteen million, forty-two thousand, eight hundred eighty-four".