495164609 has 2 divisors, whose sum is σ = 495164610. Its totient is φ = 495164608.

The previous prime is 495164597. The next prime is 495164617. The reversal of 495164609 is 906461594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409657600 + 85507009 = 20240^2 + 9247^2 .

It is a cyclic number.

It is not a de Polignac number, because 495164609 - 2⁸ = 495164353 is a prime.

It is a super-2 number, since 2×495164609² = 490375980012245762, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 495164609.

It is not a weakly prime, because it can be changed into another prime (495164629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247582304 + 247582305.

It is an arithmetic number, because the mean of its divisors is an integer number (247582305).

Almost surely, 2^495164609 is an apocalyptic number.

It is an amenable number.

495164609 is a deficient number, since it is larger than the sum of its proper divisors (1).

495164609 is an equidigital number, since it uses as much as digits as its factorization.

495164609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 495164609 is about 22252.2944659646. The cubic root of 495164609 is about 791.1336653452.

The spelling of 495164609 in words is "four hundred ninety-five million, one hundred sixty-four thousand, six hundred nine".