19384157017 has 2 divisors, whose sum is σ = 19384157018. Its totient is φ = 19384157016.

The previous prime is 19384157011. The next prime is 19384157021. The reversal of 19384157017 is 71075148391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19349922816 + 34234201 = 139104^2 + 5851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19384157017 is a prime.

It is not a weakly prime, because it can be changed into another prime (19384157011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9692078508 + 9692078509.

It is an arithmetic number, because the mean of its divisors is an integer number (9692078509).

Almost surely, 2^19384157017 is an apocalyptic number.

It is an amenable number.

19384157017 is a deficient number, since it is larger than the sum of its proper divisors (1).

19384157017 is an equidigital number, since it uses as much as digits as its factorization.

19384157017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 46.

The spelling of 19384157017 in words is "nineteen billion, three hundred eighty-four million, one hundred fifty-seven thousand, seventeen".