19111717922 has 12 divisors (see below), whose sum is σ = 31510642758. Its totient is φ = 8687144400.

The previous prime is 19111717921. The next prime is 19111717931. The reversal of 19111717922 is 22971711191.

It can be written as a sum of positive squares in only one way, i.e., 18758315521 + 353402401 = 136961^2 + 18799^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19111717922.

It is not an unprimeable number, because it can be changed into a prime (19111717921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39486779 + ... + 39487262.

Almost surely, 2^19111717922 is an apocalyptic number.

19111717922 is a deficient number, since it is larger than the sum of its proper divisors (12398924836).

19111717922 is a wasteful number, since it uses less digits than its factorization.

19111717922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78974065 (or 78974054 counting only the distinct ones).

The product of its digits is 15876, while the sum is 41.

The spelling of 19111717922 in words is "nineteen billion, one hundred eleven million, seven hundred seventeen thousand, nine hundred twenty-two".