19444197299 has 2 divisors, whose sum is σ = 19444197300. Its totient is φ = 19444197298.

The previous prime is 19444197293. The next prime is 19444197341. The reversal of 19444197299 is 99279144491.

It is a weak prime.

It is an emirp because it is prime and its reverse (99279144491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19444197299 - 2²⁴ = 19427420083 is a prime.

It is not a weakly prime, because it can be changed into another prime (19444197293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9722098649 + 9722098650.

It is an arithmetic number, because the mean of its divisors is an integer number (9722098650).

Almost surely, 2^19444197299 is an apocalyptic number.

19444197299 is a deficient number, since it is larger than the sum of its proper divisors (1).

19444197299 is an equidigital number, since it uses as much as digits as its factorization.

19444197299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 59.

The spelling of 19444197299 in words is "nineteen billion, four hundred forty-four million, one hundred ninety-seven thousand, two hundred ninety-nine".