18683974396 has 12 divisors (see below), whose sum is σ = 32885956152. Its totient is φ = 9287986928.

The previous prime is 18683974369. The next prime is 18683974403. The reversal of 18683974396 is 69347938681.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13499290 + ... + 13500673.

It is an arithmetic number, because the mean of its divisors is an integer number (2740496346).

Almost surely, 2^18683974396 is an apocalyptic number.

It is an amenable number.

18683974396 is a deficient number, since it is larger than the sum of its proper divisors (14201981756).

18683974396 is a wasteful number, since it uses less digits than its factorization.

18683974396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27000140 (or 27000138 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 64.

The spelling of 18683974396 in words is "eighteen billion, six hundred eighty-three million, nine hundred seventy-four thousand, three hundred ninety-six".