19696897307 has 2 divisors, whose sum is σ = 19696897308. Its totient is φ = 19696897306.

The previous prime is 19696897279. The next prime is 19696897313. The reversal of 19696897307 is 70379869691.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (70379869691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19696897307 - 2¹⁰ = 19696896283 is a prime.

It is not a weakly prime, because it can be changed into another prime (19696897327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9848448653 + 9848448654.

It is an arithmetic number, because the mean of its divisors is an integer number (9848448654).

Almost surely, 2^19696897307 is an apocalyptic number.

19696897307 is a deficient number, since it is larger than the sum of its proper divisors (1).

19696897307 is an equidigital number, since it uses as much as digits as its factorization.

19696897307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 65.

The spelling of 19696897307 in words is "nineteen billion, six hundred ninety-six million, eight hundred ninety-seven thousand, three hundred seven".