19946634792 has 128 divisors (see below), whose sum is σ = 59574681600. Its totient is φ = 5445273600.

The previous prime is 19946634787. The next prime is 19946634811. The reversal of 19946634792 is 29743664991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387192 + ... + 435672.

It is an arithmetic number, because the mean of its divisors is an integer number (465427200).

Almost surely, 2^19946634792 is an apocalyptic number.

19946634792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19946634792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29787340800).

19946634792 is an abundant number, since it is smaller than the sum of its proper divisors (39628046808).

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

19946634792 is a wasteful number, since it uses less digits than its factorization.

19946634792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48607 (or 48603 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 60.

The spelling of 19946634792 in words is "nineteen billion, nine hundred forty-six million, six hundred thirty-four thousand, seven hundred ninety-two".