18768844 has 24 divisors (see below), whose sum is σ = 33929280. Its totient is φ = 9080016.

The previous prime is 18768817. The next prime is 18768859. The reversal of 18768844 is 44886781.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

18768844 is a modest number, since divided by 8844 gives 1876 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 18768794 and 18768803.

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 7 ways as a sum of consecutive naturals, for example, 15219 + ... + 16405.

It is an arithmetic number, because the mean of its divisors is an integer number (1413720).

Almost surely, 2^18768844 is an apocalyptic number.

It is an amenable number.

18768844 is a deficient number, since it is larger than the sum of its proper divisors (15160436).

18768844 is a wasteful number, since it uses less digits than its factorization.

18768844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1315 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 18768844 is about 4332.3023901847. The cubic root of 18768844 is about 265.7536113332.

The spelling of 18768844 in words is "eighteen million, seven hundred sixty-eight thousand, eight hundred forty-four".