19384405913 has 2 divisors, whose sum is σ = 19384405914. Its totient is φ = 19384405912.

The previous prime is 19384405879. The next prime is 19384405951. The reversal of 19384405913 is 31950448391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18805185424 + 579220489 = 137132^2 + 24067^2 .

It is a cyclic number.

It is not a de Polignac number, because 19384405913 - 2¹⁶ = 19384340377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19384402913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9692202956 + 9692202957.

It is an arithmetic number, because the mean of its divisors is an integer number (9692202957).

Almost surely, 2^19384405913 is an apocalyptic number.

It is an amenable number.

19384405913 is a deficient number, since it is larger than the sum of its proper divisors (1).

19384405913 is an equidigital number, since it uses as much as digits as its factorization.

19384405913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 19384405913 in words is "nineteen billion, three hundred eighty-four million, four hundred five thousand, nine hundred thirteen".