19408743922 has 16 divisors (see below), whose sum is σ = 30753689760. Its totient is φ = 9161124192.

The previous prime is 19408743917. The next prime is 19408743929. The reversal of 19408743922 is 22934780491.

It is not an unprimeable number, because it can be changed into a prime (19408743929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891643 + ... + 913150.

It is an arithmetic number, because the mean of its divisors is an integer number (1922105610).

Almost surely, 2^19408743922 is an apocalyptic number.

19408743922 is a deficient number, since it is larger than the sum of its proper divisors (11344945838).

19408743922 is a wasteful number, since it uses less digits than its factorization.

19408743922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805097.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 19408743922 in words is "nineteen billion, four hundred eight million, seven hundred forty-three thousand, nine hundred twenty-two".