19195849922 has 10 divisors (see below), whose sum is σ = 28886062623. Its totient is φ = 9567260664.

The previous prime is 19195849921. The next prime is 19195849927. The reversal of 19195849922 is 22994859191.

It can be written as a sum of positive squares in 3 ways, for example, as 6580292161 + 12615557761 = 81119^2 + 112319^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=97969.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19195849921) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 61328438 + ... + 61328750.

Almost surely, 2^19195849922 is an apocalyptic number.

19195849922 is a deficient number, since it is larger than the sum of its proper divisors (9690212701).

19195849922 is an frugal number, since it uses more digits than its factorization.

19195849922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 315 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 59.

The spelling of 19195849922 in words is "nineteen billion, one hundred ninety-five million, eight hundred forty-nine thousand, nine hundred twenty-two".