1680364013 has 2 divisors, whose sum is σ = 1680364014. Its totient is φ = 1680364012.

The previous prime is 1680364001. The next prime is 1680364027. The reversal of 1680364013 is 3104630861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1073086564 + 607277449 = 32758^2 + 24643^2 .

It is a cyclic number.

It is not a de Polignac number, because 1680364013 - 2²² = 1676169709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680364043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840182006 + 840182007.

It is an arithmetic number, because the mean of its divisors is an integer number (840182007).

Almost surely, 2^1680364013 is an apocalyptic number.

It is an amenable number.

1680364013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680364013 is an equidigital number, since it uses as much as digits as its factorization.

1680364013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1680364013 is about 40992.2433272442. The cubic root of 1680364013 is about 1188.8702440689.

Adding to 1680364013 its reverse (3104630861), we get a palindrome (4784994874).

The spelling of 1680364013 in words is "one billion, six hundred eighty million, three hundred sixty-four thousand, thirteen".