495198569 has 2 divisors, whose sum is σ = 495198570. Its totient is φ = 495198568.

The previous prime is 495198563. The next prime is 495198607. The reversal of 495198569 is 965891594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491198569 + 4000000 = 22163^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 495198569 - 2¹⁶ = 495133033 is a prime.

It is a super-2 number, since 2×495198569² = 490443245479295522, which contains 22 as substring.

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 (495198563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247599284 + 247599285.

It is an arithmetic number, because the mean of its divisors is an integer number (247599285).

Almost surely, 2^495198569 is an apocalyptic number.

It is an amenable number.

495198569 is a deficient number, since it is larger than the sum of its proper divisors (1).

495198569 is an equidigital number, since it uses as much as digits as its factorization.

495198569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3499200, while the sum is 56.

The square root of 495198569 is about 22253.0575202600. The cubic root of 495198569 is about 791.1517511054.

The spelling of 495198569 in words is "four hundred ninety-five million, one hundred ninety-eight thousand, five hundred sixty-nine".