17936981368 has 16 divisors (see below), whose sum is σ = 33731642880. Its totient is φ = 8941876608.

The previous prime is 17936981357. The next prime is 17936981389. The reversal of 17936981368 is 86318963971.

It is a congruent number.

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, 3323896 + ... + 3329287.

It is an arithmetic number, because the mean of its divisors is an integer number (2108227680).

Almost surely, 2^17936981368 is an apocalyptic number.

It is an amenable number.

17936981368 is a deficient number, since it is larger than the sum of its proper divisors (15794661512).

17936981368 is a wasteful number, since it uses less digits than its factorization.

17936981368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653526 (or 6653522 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The spelling of 17936981368 in words is "seventeen billion, nine hundred thirty-six million, nine hundred eighty-one thousand, three hundred sixty-eight".