19404000017 has 2 divisors, whose sum is σ = 19404000018. Its totient is φ = 19404000016.

The previous prime is 19403999999. The next prime is 19404000053. The reversal of 19404000017 is 71000040491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19376918401 + 27081616 = 139201^2 + 5204^2 .

It is an emirp because it is prime and its reverse (71000040491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19404000017 - 2⁸ = 19403999761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19404000017.

It is not a weakly prime, because it can be changed into another prime (19404000067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9702000008 + 9702000009.

It is an arithmetic number, because the mean of its divisors is an integer number (9702000009).

Almost surely, 2^19404000017 is an apocalyptic number.

It is an amenable number.

19404000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

19404000017 is an equidigital number, since it uses as much as digits as its factorization.

19404000017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 19404000017 in words is "nineteen billion, four hundred four million, seventeen", and thus it is an aban number.