18976239368 has 16 divisors (see below), whose sum is σ = 35591660880. Its totient is φ = 9485129808.

The previous prime is 18976239361. The next prime is 18976239383. The reversal of 18976239368 is 86393267981.

It is a self number, because there is not a number n which added to its sum of digits gives 18976239368.

It is not an unprimeable number, because it can be changed into a prime (18976239361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346646 + ... + 397637.

It is an arithmetic number, because the mean of its divisors is an integer number (2224478805).

Almost surely, 2^18976239368 is an apocalyptic number.

It is an amenable number.

18976239368 is a deficient number, since it is larger than the sum of its proper divisors (16615421512).

18976239368 is a wasteful number, since it uses less digits than its factorization.

18976239368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747476 (or 747472 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The spelling of 18976239368 in words is "eighteen billion, nine hundred seventy-six million, two hundred thirty-nine thousand, three hundred sixty-eight".