18684132 has 24 divisors (see below), whose sum is σ = 44150400. Its totient is φ = 6148896.

The previous prime is 18684121. The next prime is 18684161. The reversal of 18684132 is 23148681.

It is a junction number, because it is equal to n+sod(n) for n = 18684093 and 18684102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8907 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (1839600).

Almost surely, 2^18684132 is an apocalyptic number.

18684132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18684132 is an abundant number, since it is smaller than the sum of its proper divisors (25466268).

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

18684132 is a wasteful number, since it uses less digits than its factorization.

18684132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19795 (or 19793 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18684132 is about 4322.5145459559. The cubic root of 18684132 is about 265.3531875471.

The spelling of 18684132 in words is "eighteen million, six hundred eighty-four thousand, one hundred thirty-two".