19297166899 has 2 divisors, whose sum is σ = 19297166900. Its totient is φ = 19297166898.

The previous prime is 19297166891. The next prime is 19297166923. The reversal of 19297166899 is 99866179291.

It is a weak prime.

It is an emirp because it is prime and its reverse (99866179291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19297166899 - 2³ = 19297166891 is a prime.

It is a super-2 number, since 2×19297166899² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19297166891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9648583449 + 9648583450.

It is an arithmetic number, because the mean of its divisors is an integer number (9648583450).

Almost surely, 2^19297166899 is an apocalyptic number.

19297166899 is a deficient number, since it is larger than the sum of its proper divisors (1).

19297166899 is an equidigital number, since it uses as much as digits as its factorization.

19297166899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 67.

The spelling of 19297166899 in words is "nineteen billion, two hundred ninety-seven million, one hundred sixty-six thousand, eight hundred ninety-nine".