495115109 has 2 divisors, whose sum is σ = 495115110. Its totient is φ = 495115108.

The previous prime is 495115051. The next prime is 495115111. The reversal of 495115109 is 901511594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 468592609 + 26522500 = 21647^2 + 5150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495115109 is a prime.

Together with 495115111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495115609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247557554 + 247557555.

It is an arithmetic number, because the mean of its divisors is an integer number (247557555).

Almost surely, 2^495115109 is an apocalyptic number.

It is an amenable number.

495115109 is a deficient number, since it is larger than the sum of its proper divisors (1).

495115109 is an equidigital number, since it uses as much as digits as its factorization.

495115109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 495115109 is about 22251.1821933128. The cubic root of 495115109 is about 791.1073021112.

The spelling of 495115109 in words is "four hundred ninety-five million, one hundred fifteen thousand, one hundred nine".