19118884317 has 24 divisors (see below), whose sum is σ = 28555466400. Its totient is φ = 11359752768.

The previous prime is 19118884307. The next prime is 19118884321. The reversal of 19118884317 is 71348881191.

It is not a de Polignac number, because 19118884317 - 2⁸ = 19118884061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19118884317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19118884307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635467 + ... + 664872.

It is an arithmetic number, because the mean of its divisors is an integer number (1189811100).

Almost surely, 2^19118884317 is an apocalyptic number.

It is an amenable number.

19118884317 is a deficient number, since it is larger than the sum of its proper divisors (9436582083).

19118884317 is a wasteful number, since it uses less digits than its factorization.

19118884317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300397 (or 1300384 counting only the distinct ones).

The product of its digits is 387072, while the sum is 51.

The spelling of 19118884317 in words is "nineteen billion, one hundred eighteen million, eight hundred eighty-four thousand, three hundred seventeen".