19613768922 has 64 divisors (see below), whose sum is σ = 47588400000. Its totient is φ = 5938583040.

The previous prime is 19613768879. The next prime is 19613768929. The reversal of 19613768922 is 22986731691.

19613768922 is a `hidden beast` number, since 19 + 613 + 7 + 6 + 8 + 9 + 2 + 2 = 666.

It is a super-2 number, since 2×19613768922² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (19613768929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728688 + ... + 755124.

It is an arithmetic number, because the mean of its divisors is an integer number (743568750).

Almost surely, 2^19613768922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19613768922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23794200000).

19613768922 is an abundant number, since it is smaller than the sum of its proper divisors (27974631078).

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

19613768922 is a wasteful number, since it uses less digits than its factorization.

19613768922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708 (or 27702 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 19613768922 in words is "nineteen billion, six hundred thirteen million, seven hundred sixty-eight thousand, nine hundred twenty-two".