508209113 has 2 divisors, whose sum is σ = 508209114. Its totient is φ = 508209112.

The previous prime is 508209109. The next prime is 508209139. The reversal of 508209113 is 311902805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505935049 + 2274064 = 22493^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 508209113 - 2² = 508209109 is a prime.

It is not a weakly prime, because it can be changed into another prime (508209413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254104556 + 254104557.

It is an arithmetic number, because the mean of its divisors is an integer number (254104557).

Almost surely, 2^508209113 is an apocalyptic number.

It is an amenable number.

508209113 is a deficient number, since it is larger than the sum of its proper divisors (1).

508209113 is an equidigital number, since it uses as much as digits as its factorization.

508209113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 508209113 is about 22543.4938064179. The cubic root of 508209113 is about 798.0206866244.

The spelling of 508209113 in words is "five hundred eight million, two hundred nine thousand, one hundred thirteen".