19390920922 has 8 divisors (see below), whose sum is σ = 29169724500. Its totient is φ = 9667679424.

The previous prime is 19390920917. The next prime is 19390920961. The reversal of 19390920922 is 22902909391.

It can be written as a sum of positive squares in 2 ways, for example, as 18840033081 + 550887841 = 137259^2 + 23471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13889647 + ... + 13891042.

Almost surely, 2^19390920922 is an apocalyptic number.

19390920922 is a deficient number, since it is larger than the sum of its proper divisors (9778803578).

19390920922 is a wasteful number, since it uses less digits than its factorization.

19390920922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27781040.

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 19390920922 in words is "nineteen billion, three hundred ninety million, nine hundred twenty thousand, nine hundred twenty-two".