130908809 has 2 divisors, whose sum is σ = 130908810. Its totient is φ = 130908808.

The previous prime is 130908797. The next prime is 130908881. The reversal of 130908809 is 908809031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96098809 + 34810000 = 9803^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 130908809 - 2¹² = 130904713 is a prime.

It is not a weakly prime, because it can be changed into another prime (130902809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65454404 + 65454405.

It is an arithmetic number, because the mean of its divisors is an integer number (65454405).

Almost surely, 2^130908809 is an apocalyptic number.

It is an amenable number.

130908809 is a deficient number, since it is larger than the sum of its proper divisors (1).

130908809 is an equidigital number, since it uses as much as digits as its factorization.

130908809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 130908809 is about 11441.5387514093. The cubic root of 130908809 is about 507.7574340018.

The spelling of 130908809 in words is "one hundred thirty million, nine hundred eight thousand, eight hundred nine".