130806869 has 2 divisors, whose sum is σ = 130806870. Its totient is φ = 130806868.

The previous prime is 130806859. The next prime is 130806881. The reversal of 130806869 is 968608031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122367844 + 8439025 = 11062^2 + 2905^2 .

It is a cyclic number.

It is not a de Polignac number, because 130806869 - 2⁴ = 130806853 is a prime.

It is a super-2 number, since 2×130806869² = 34220873955166322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130806839) 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, 65403434 + 65403435.

It is an arithmetic number, because the mean of its divisors is an integer number (65403435).

Almost surely, 2^130806869 is an apocalyptic number.

It is an amenable number.

130806869 is a deficient number, since it is larger than the sum of its proper divisors (1).

130806869 is an equidigital number, since it uses as much as digits as its factorization.

130806869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 130806869 is about 11437.0830634389. The cubic root of 130806869 is about 507.6256011772.

The spelling of 130806869 in words is "one hundred thirty million, eight hundred six thousand, eight hundred sixty-nine".