18042184 has 16 divisors (see below), whose sum is σ = 33909120. Its totient is φ = 8999760.

The previous prime is 18042181. The next prime is 18042197. The reversal of 18042184 is 48124081.

It is not an unprimeable number, because it can be changed into a prime (18042181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (2119320).

Almost surely, 2^18042184 is an apocalyptic number.

It is an amenable number.

18042184 is a deficient number, since it is larger than the sum of its proper divisors (15866936).

18042184 is a wasteful number, since it uses less digits than its factorization.

18042184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340 (or 5336 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 18042184 is about 4247.6092098968. The cubic root of 18042184 is about 262.2787081331.

The spelling of 18042184 in words is "eighteen million, forty-two thousand, one hundred eighty-four".