19126328713 has 2 divisors, whose sum is σ = 19126328714. Its totient is φ = 19126328712.

The previous prime is 19126328699. The next prime is 19126328723. The reversal of 19126328713 is 31782362191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13839875449 + 5286453264 = 117643^2 + 72708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19126328713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19126328713.

It is not a weakly prime, because it can be changed into another prime (19126328723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9563164356 + 9563164357.

It is an arithmetic number, because the mean of its divisors is an integer number (9563164357).

Almost surely, 2^19126328713 is an apocalyptic number.

It is an amenable number.

19126328713 is a deficient number, since it is larger than the sum of its proper divisors (1).

19126328713 is an equidigital number, since it uses as much as digits as its factorization.

19126328713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The spelling of 19126328713 in words is "nineteen billion, one hundred twenty-six million, three hundred twenty-eight thousand, seven hundred thirteen".