19382442272 has 18 divisors (see below), whose sum is σ = 38160733779. Its totient is φ = 9690827360.

The previous prime is 19382442259. The next prime is 19382442281. The reversal of 19382442272 is 27224428391.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 9691221136 + 9691221136 = 98444^2 + 98444^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98444.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 775247 + ... + 799857.

Almost surely, 2^19382442272 is an apocalyptic number.

It is an amenable number.

19382442272 is a deficient number, since it is larger than the sum of its proper divisors (18778291507).

19382442272 is an frugal number, since it uses more digits than its factorization.

19382442272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49232 (or 24613 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The spelling of 19382442272 in words is "nineteen billion, three hundred eighty-two million, four hundred forty-two thousand, two hundred seventy-two".