19568848969 has 2 divisors, whose sum is σ = 19568848970. Its totient is φ = 19568848968.

The previous prime is 19568848963. The next prime is 19568848987. The reversal of 19568848969 is 96984886591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17517846025 + 2051002944 = 132355^2 + 45288^2 .

It is an emirp because it is prime and its reverse (96984886591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19568848969 - 2¹⁹ = 19568324681 is a prime.

It is a super-2 number, since 2×19568848969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19568848963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9784424484 + 9784424485.

It is an arithmetic number, because the mean of its divisors is an integer number (9784424485).

Almost surely, 2^19568848969 is an apocalyptic number.

It is an amenable number.

19568848969 is a deficient number, since it is larger than the sum of its proper divisors (1).

19568848969 is an equidigital number, since it uses as much as digits as its factorization.

19568848969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268738560, while the sum is 73.

The spelling of 19568848969 in words is "nineteen billion, five hundred sixty-eight million, eight hundred forty-eight thousand, nine hundred sixty-nine".