419268519209 has 2 divisors, whose sum is σ = 419268519210. Its totient is φ = 419268519208.

The previous prime is 419268519169. The next prime is 419268519223. The reversal of 419268519209 is 902915862914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 398922349609 + 20346169600 = 631603^2 + 142640^2 .

It is a cyclic number.

It is not a de Polignac number, because 419268519209 - 2³² = 414973551913 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 (419268519239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209634259604 + 209634259605.

It is an arithmetic number, because the mean of its divisors is an integer number (209634259605).

Almost surely, 2^419268519209 is an apocalyptic number.

It is an amenable number.

419268519209 is a deficient number, since it is larger than the sum of its proper divisors (1).

419268519209 is an equidigital number, since it uses as much as digits as its factorization.

419268519209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 419268519209 in words is "four hundred nineteen billion, two hundred sixty-eight million, five hundred nineteen thousand, two hundred nine".