19849342319 has 2 divisors, whose sum is σ = 19849342320. Its totient is φ = 19849342318.

The previous prime is 19849342301. The next prime is 19849342363. The reversal of 19849342319 is 91324394891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19849342319 is a prime.

It is a super-2 number, since 2×19849342319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19849342369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9924671159 + 9924671160.

It is an arithmetic number, because the mean of its divisors is an integer number (9924671160).

Almost surely, 2^19849342319 is an apocalyptic number.

19849342319 is a deficient number, since it is larger than the sum of its proper divisors (1).

19849342319 is an equidigital number, since it uses as much as digits as its factorization.

19849342319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The spelling of 19849342319 in words is "nineteen billion, eight hundred forty-nine million, three hundred forty-two thousand, three hundred nineteen".