827018813 has 2 divisors, whose sum is σ = 827018814. Its totient is φ = 827018812.

The previous prime is 827018707. The next prime is 827018849. The reversal of 827018813 is 318810728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 719419684 + 107599129 = 26822^2 + 10373^2 .

It is a cyclic number.

It is not a de Polignac number, because 827018813 - 2²⁰ = 825970237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (827018113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413509406 + 413509407.

It is an arithmetic number, because the mean of its divisors is an integer number (413509407).

Almost surely, 2^827018813 is an apocalyptic number.

It is an amenable number.

827018813 is a deficient number, since it is larger than the sum of its proper divisors (1).

827018813 is an equidigital number, since it uses as much as digits as its factorization.

827018813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 827018813 is about 28757.9347832907. The cubic root of 827018813 is about 938.6531234903.

The spelling of 827018813 in words is "eight hundred twenty-seven million, eighteen thousand, eight hundred thirteen".