18732812 has 12 divisors (see below), whose sum is σ = 37465680. Its totient is φ = 8028336.

The previous prime is 18732751. The next prime is 18732829. The reversal of 18732812 is 21823781.

18732812 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334487 + ... + 334542.

It is an arithmetic number, because the mean of its divisors is an integer number (3122140).

Almost surely, 2^18732812 is an apocalyptic number.

It is an amenable number.

18732812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18732812 is a wasteful number, since it uses less digits than its factorization.

18732812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669040 (or 669038 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 18732812 is about 4328.1418645881. The cubic root of 18732812 is about 265.5834398092.

The spelling of 18732812 in words is "eighteen million, seven hundred thirty-two thousand, eight hundred twelve".