19031370368 has 64 divisors (see below), whose sum is σ = 40505546400. Its totient is φ = 8880233472.

The previous prime is 19031370361. The next prime is 19031370403. The reversal of 19031370368 is 86307313091.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (19031370361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104546 + ... + 221342.

Almost surely, 2^19031370368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19031370368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20252773200).

19031370368 is an abundant number, since it is smaller than the sum of its proper divisors (21474176032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19031370368 is a wasteful number, since it uses less digits than its factorization.

19031370368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116897 (or 116885 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 19031370368 in words is "nineteen billion, thirty-one million, three hundred seventy thousand, three hundred sixty-eight".