17918159372 has 24 divisors (see below), whose sum is σ = 31614924432. Its totient is φ = 8885606400.

The previous prime is 17918159359. The next prime is 17918159377. The reversal of 17918159372 is 27395181971.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (17918159377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220472 + ... + 290592.

It is an arithmetic number, because the mean of its divisors is an integer number (1317288518).

Almost surely, 2^17918159372 is an apocalyptic number.

It is an amenable number.

17918159372 is a deficient number, since it is larger than the sum of its proper divisors (13696765060).

17918159372 is a wasteful number, since it uses less digits than its factorization.

17918159372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70649 (or 70647 counting only the distinct ones).

The product of its digits is 952560, while the sum is 53.

The spelling of 17918159372 in words is "seventeen billion, nine hundred eighteen million, one hundred fifty-nine thousand, three hundred seventy-two".