18942484 has 12 divisors (see below), whose sum is σ = 36163008. Its totient is φ = 8610200.

The previous prime is 18942479. The next prime is 18942499. The reversal of 18942484 is 48424981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215212 + ... + 215299.

It is an arithmetic number, because the mean of its divisors is an integer number (3013584).

Almost surely, 2^18942484 is an apocalyptic number.

It is an amenable number.

18942484 is a deficient number, since it is larger than the sum of its proper divisors (17220524).

18942484 is a wasteful number, since it uses less digits than its factorization.

18942484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430526 (or 430524 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 18942484 is about 4352.2964053474. The cubic root of 18942484 is about 266.5706369505.

The spelling of 18942484 in words is "eighteen million, nine hundred forty-two thousand, four hundred eighty-four".