19323607139 has 2 divisors, whose sum is σ = 19323607140. Its totient is φ = 19323607138.

The previous prime is 19323607117. The next prime is 19323607187. The reversal of 19323607139 is 93170632391.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19323607139 - 2²⁸ = 19055171683 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19323607139.

It is not a weakly prime, because it can be changed into another prime (19323607189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9661803569 + 9661803570.

It is an arithmetic number, because the mean of its divisors is an integer number (9661803570).

Almost surely, 2^19323607139 is an apocalyptic number.

19323607139 is a deficient number, since it is larger than the sum of its proper divisors (1).

19323607139 is an equidigital number, since it uses as much as digits as its factorization.

19323607139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 44.

The spelling of 19323607139 in words is "nineteen billion, three hundred twenty-three million, six hundred seven thousand, one hundred thirty-nine".