130205869 has 2 divisors, whose sum is σ = 130205870. Its totient is φ = 130205868.

The previous prime is 130205837. The next prime is 130205897. The reversal of 130205869 is 968502031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126450025 + 3755844 = 11245^2 + 1938^2 .

It is a cyclic number.

It is not a de Polignac number, because 130205869 - 2⁵ = 130205837 is a prime.

It is a super-2 number, since 2×130205869² = 33907136644090322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130205819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65102934 + 65102935.

It is an arithmetic number, because the mean of its divisors is an integer number (65102935).

Almost surely, 2^130205869 is an apocalyptic number.

It is an amenable number.

130205869 is a deficient number, since it is larger than the sum of its proper divisors (1).

130205869 is an equidigital number, since it uses as much as digits as its factorization.

130205869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 130205869 is about 11410.7786325036. The cubic root of 130205869 is about 506.8469687153.

The spelling of 130205869 in words is "one hundred thirty million, two hundred five thousand, eight hundred sixty-nine".