19680789413 has 2 divisors, whose sum is σ = 19680789414. Its totient is φ = 19680789412.

The previous prime is 19680789329. The next prime is 19680789433. The reversal of 19680789413 is 31498708691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12029263684 + 7651525729 = 109678^2 + 87473^2 .

It is a cyclic number.

It is not a de Polignac number, because 19680789413 - 2⁸ = 19680789157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19680789433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9840394706 + 9840394707.

It is an arithmetic number, because the mean of its divisors is an integer number (9840394707).

Almost surely, 2^19680789413 is an apocalyptic number.

It is an amenable number.

19680789413 is a deficient number, since it is larger than the sum of its proper divisors (1).

19680789413 is an equidigital number, since it uses as much as digits as its factorization.

19680789413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 19680789413 in words is "nineteen billion, six hundred eighty million, seven hundred eighty-nine thousand, four hundred thirteen".