18764484 has 12 divisors (see below), whose sum is σ = 43783824. Its totient is φ = 6254824.

The previous prime is 18764477. The next prime is 18764507. The reversal of 18764484 is 48446781.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 781842 + ... + 781865.

It is an arithmetic number, because the mean of its divisors is an integer number (3648652).

Almost surely, 2^18764484 is an apocalyptic number.

It is an amenable number.

18764484 is an abundant number, since it is smaller than the sum of its proper divisors (25019340).

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

18764484 is a wasteful number, since it uses less digits than its factorization.

18764484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563714 (or 1563712 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 18764484 is about 4331.7991643196. The cubic root of 18764484 is about 265.7330315632.

The spelling of 18764484 in words is "eighteen million, seven hundred sixty-four thousand, four hundred eighty-four".