19309245353 has 2 divisors, whose sum is σ = 19309245354. Its totient is φ = 19309245352.

The previous prime is 19309245317. The next prime is 19309245377. The reversal of 19309245353 is 35354290391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14335751824 + 4973493529 = 119732^2 + 70523^2 .

It is a cyclic number.

It is not a de Polignac number, because 19309245353 - 2²⁴ = 19292468137 is a prime.

It is a super-2 number, since 2×19309245353² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19309241353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9654622676 + 9654622677.

It is an arithmetic number, because the mean of its divisors is an integer number (9654622677).

Almost surely, 2^19309245353 is an apocalyptic number.

It is an amenable number.

19309245353 is a deficient number, since it is larger than the sum of its proper divisors (1).

19309245353 is an equidigital number, since it uses as much as digits as its factorization.

19309245353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 44.

The spelling of 19309245353 in words is "nineteen billion, three hundred nine million, two hundred forty-five thousand, three hundred fifty-three".