19289057969 has 2 divisors, whose sum is σ = 19289057970. Its totient is φ = 19289057968.

The previous prime is 19289057959. The next prime is 19289057971. The reversal of 19289057969 is 96975098291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18336409744 + 952648225 = 135412^2 + 30865^2 .

It is an emirp because it is prime and its reverse (96975098291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19289057969 - 2²⁰ = 19288009393 is a prime.

It is a super-2 number, since 2×19289057969² (a number of 21 digits) contains 22 as substring.

Together with 19289057971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19289057959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9644528984 + 9644528985.

It is an arithmetic number, because the mean of its divisors is an integer number (9644528985).

Almost surely, 2^19289057969 is an apocalyptic number.

It is an amenable number.

19289057969 is a deficient number, since it is larger than the sum of its proper divisors (1).

19289057969 is an equidigital number, since it uses as much as digits as its factorization.

19289057969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 65.

The spelling of 19289057969 in words is "nineteen billion, two hundred eighty-nine million, fifty-seven thousand, nine hundred sixty-nine".