19914913356 has 72 divisors (see below), whose sum is σ = 50378840064. Its totient is φ = 6120204480.

The previous prime is 19914913349. The next prime is 19914913393. The reversal of 19914913356 is 65331941991.

It is a junction number, because it is equal to n+sod(n) for n = 19914913299 and 19914913308.

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, 1793301 + ... + 1804371.

It is an arithmetic number, because the mean of its divisors is an integer number (699706112).

Almost surely, 2^19914913356 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 19914913356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25189420032).

19914913356 is an abundant number, since it is smaller than the sum of its proper divisors (30463926708).

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

19914913356 is a wasteful number, since it uses less digits than its factorization.

19914913356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11991 (or 11976 counting only the distinct ones).

The product of its digits is 787320, while the sum is 51.

The spelling of 19914913356 in words is "nineteen billion, nine hundred fourteen million, nine hundred thirteen thousand, three hundred fifty-six".