18814984 has 16 divisors (see below), whose sum is σ = 35333100. Its totient is φ = 9392832.

The previous prime is 18814979. The next prime is 18815009. The reversal of 18814984 is 48941881.

It can be written as a sum of positive squares in 2 ways, for example, as 17556100 + 1258884 = 4190^2 + 1122^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18814984.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5214 + ... + 8050.

Almost surely, 2^18814984 is an apocalyptic number.

It is an amenable number.

18814984 is a deficient number, since it is larger than the sum of its proper divisors (16518116).

18814984 is a wasteful number, since it uses less digits than its factorization.

18814984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672 (or 3668 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 18814984 is about 4337.6242345321. The cubic root of 18814984 is about 265.9712030936.

The spelling of 18814984 in words is "eighteen million, eight hundred fourteen thousand, nine hundred eighty-four".