19213791168 has 168 divisors, whose sum is σ = 60053256576. Its totient is φ = 5374387200.

The previous prime is 19213791151. The next prime is 19213791197. The reversal of 19213791168 is 86119731291.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330013 + ... + 383843.

Almost surely, 2^19213791168 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 19213791168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30026628288).

19213791168 is an abundant number, since it is smaller than the sum of its proper divisors (40839465408).

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

19213791168 is a wasteful number, since it uses less digits than its factorization.

19213791168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53883 (or 53860 counting only the distinct ones).

The product of its digits is 163296, while the sum is 48.

The spelling of 19213791168 in words is "nineteen billion, two hundred thirteen million, seven hundred ninety-one thousand, one hundred sixty-eight".