130786517 has 2 divisors, whose sum is σ = 130786518. Its totient is φ = 130786516.

The previous prime is 130786511. The next prime is 130786531. The reversal of 130786517 is 715687031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110796676 + 19989841 = 10526^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 130786517 - 2¹⁶ = 130720981 is a prime.

It is a super-2 number, since 2×130786517² = 34210226057982578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130786511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65393258 + 65393259.

It is an arithmetic number, because the mean of its divisors is an integer number (65393259).

Almost surely, 2^130786517 is an apocalyptic number.

It is an amenable number.

130786517 is a deficient number, since it is larger than the sum of its proper divisors (1).

130786517 is an equidigital number, since it uses as much as digits as its factorization.

130786517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 130786517 is about 11436.1932914760. The cubic root of 130786517 is about 507.5992729674.

The spelling of 130786517 in words is "one hundred thirty million, seven hundred eighty-six thousand, five hundred seventeen".