130508909 has 2 divisors, whose sum is σ = 130508910. Its totient is φ = 130508908.

The previous prime is 130508887. The next prime is 130508921. The reversal of 130508909 is 909805031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112826884 + 17682025 = 10622^2 + 4205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130508909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130508809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65254454 + 65254455.

It is an arithmetic number, because the mean of its divisors is an integer number (65254455).

Almost surely, 2^130508909 is an apocalyptic number.

It is an amenable number.

130508909 is a deficient number, since it is larger than the sum of its proper divisors (1).

130508909 is an equidigital number, since it uses as much as digits as its factorization.

130508909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 130508909 is about 11424.0495884778. The cubic root of 130508909 is about 507.2398744574.

The spelling of 130508909 in words is "one hundred thirty million, five hundred eight thousand, nine hundred nine".