18093984 has 48 divisors (see below), whose sum is σ = 50295168. Its totient is φ = 5676032.

The previous prime is 18093983. The next prime is 18093991. The reversal of 18093984 is 48939081.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18093983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912 + ... + 7175.

It is an arithmetic number, because the mean of its divisors is an integer number (1047816).

Almost surely, 2^18093984 is an apocalyptic number.

It is an amenable number.

18093984 is an abundant number, since it is smaller than the sum of its proper divisors (32201184).

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

18093984 is a wasteful number, since it uses less digits than its factorization.

18093984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11117 (or 11109 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 18093984 is about 4253.7023873327. The cubic root of 18093984 is about 262.5294733346.

The spelling of 18093984 in words is "eighteen million, ninety-three thousand, nine hundred eighty-four".