19126328723 has 2 divisors, whose sum is σ = 19126328724. Its totient is φ = 19126328722.

The previous prime is 19126328713. The next prime is 19126328747. The reversal of 19126328723 is 32782362191.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (32782362191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19126328723 - 2⁸ = 19126328467 is a prime.

It is not a weakly prime, because it can be changed into another prime (19126328713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9563164361 + 9563164362.

It is an arithmetic number, because the mean of its divisors is an integer number (9563164362).

Almost surely, 2^19126328723 is an apocalyptic number.

19126328723 is a deficient number, since it is larger than the sum of its proper divisors (1).

19126328723 is an equidigital number, since it uses as much as digits as its factorization.

19126328723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The spelling of 19126328723 in words is "nineteen billion, one hundred twenty-six million, three hundred twenty-eight thousand, seven hundred twenty-three".