19492079193 has 10 divisors (see below), whose sum is σ = 29117797434. Its totient is φ = 12994719408.

The previous prime is 19492079177. The next prime is 19492079203. The reversal of 19492079193 is 39197029491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11332028304 + 8160050889 = 106452^2 + 90333^2 .

It is not a de Polignac number, because 19492079193 - 2⁴ = 19492079177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19492009193) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 120321396 + ... + 120321557.

Almost surely, 2^19492079193 is an apocalyptic number.

It is an amenable number.

19492079193 is a deficient number, since it is larger than the sum of its proper divisors (9625718241).

19492079193 is an equidigital number, since it uses as much as digits as its factorization.

19492079193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240642965 (or 240642956 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The spelling of 19492079193 in words is "nineteen billion, four hundred ninety-two million, seventy-nine thousand, one hundred ninety-three".