130205819 has 2 divisors, whose sum is σ = 130205820. Its totient is φ = 130205818.

The previous prime is 130205773. The next prime is 130205827. The reversal of 130205819 is 918502031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130205819 is a prime.

It is a super-2 number, since 2×130205819² = 33907110602921522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 130205791 and 130205800.

It is not a weakly prime, because it can be changed into another prime (130205869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65102909 + 65102910.

It is an arithmetic number, because the mean of its divisors is an integer number (65102910).

Almost surely, 2^130205819 is an apocalyptic number.

130205819 is a deficient number, since it is larger than the sum of its proper divisors (1).

130205819 is an equidigital number, since it uses as much as digits as its factorization.

130205819 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 130205819 is about 11410.7764415924. The cubic root of 130205819 is about 506.8469038377.

The spelling of 130205819 in words is "one hundred thirty million, two hundred five thousand, eight hundred nineteen".