19052857009 has 2 divisors, whose sum is σ = 19052857010. Its totient is φ = 19052857008.

The previous prime is 19052856899. The next prime is 19052857027. The reversal of 19052857009 is 90075825091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12648376225 + 6404480784 = 112465^2 + 80028^2 .

It is a cyclic number.

It is not a de Polignac number, because 19052857009 - 2¹⁹ = 19052332721 is a prime.

It is a super-2 number, since 2×19052857009² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19052857009.

It is not a weakly prime, because it can be changed into another prime (19052857409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9526428504 + 9526428505.

It is an arithmetic number, because the mean of its divisors is an integer number (9526428505).

Almost surely, 2^19052857009 is an apocalyptic number.

It is an amenable number.

19052857009 is a deficient number, since it is larger than the sum of its proper divisors (1).

19052857009 is an equidigital number, since it uses as much as digits as its factorization.

19052857009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 19052857009 in words is "nineteen billion, fifty-two million, eight hundred fifty-seven thousand, nine".