19136797171 has 2 divisors, whose sum is σ = 19136797172. Its totient is φ = 19136797170.

The previous prime is 19136797129. The next prime is 19136797217. The reversal of 19136797171 is 17179763191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19136797171 - 2⁹ = 19136796659 is a prime.

It is not a weakly prime, because it can be changed into another prime (19136737171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9568398585 + 9568398586.

It is an arithmetic number, because the mean of its divisors is an integer number (9568398586).

Almost surely, 2^19136797171 is an apocalyptic number.

19136797171 is a deficient number, since it is larger than the sum of its proper divisors (1).

19136797171 is an equidigital number, since it uses as much as digits as its factorization.

19136797171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 500094, while the sum is 52.

The spelling of 19136797171 in words is "nineteen billion, one hundred thirty-six million, seven hundred ninety-seven thousand, one hundred seventy-one".