18984924 has 36 divisors (see below), whose sum is σ = 54846064. Its totient is φ = 5424192.

The previous prime is 18984907. The next prime is 18984941. The reversal of 18984924 is 42948981.

It is an interprime number because it is at equal distance from previous prime (18984907) and next prime (18984941).

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18984924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37417 + ... + 37920.

Almost surely, 2^18984924 is an apocalyptic number.

18984924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18984924 is an abundant number, since it is smaller than the sum of its proper divisors (35861140).

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

18984924 is a wasteful number, since it uses less digits than its factorization.

18984924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75354 (or 75349 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18984924 is about 4357.1692645570. The cubic root of 18984924 is about 266.7695693141.

The spelling of 18984924 in words is "eighteen million, nine hundred eighty-four thousand, nine hundred twenty-four".