818940713 has 2 divisors, whose sum is σ = 818940714. Its totient is φ = 818940712.

The previous prime is 818940701. The next prime is 818940751. The reversal of 818940713 is 317049818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457446544 + 361494169 = 21388^2 + 19013^2 .

It is a cyclic number.

It is not a de Polignac number, because 818940713 - 2⁴ = 818940697 is a prime.

It is not a weakly prime, because it can be changed into another prime (818940763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409470356 + 409470357.

It is an arithmetic number, because the mean of its divisors is an integer number (409470357).

Almost surely, 2^818940713 is an apocalyptic number.

It is an amenable number.

818940713 is a deficient number, since it is larger than the sum of its proper divisors (1).

818940713 is an equidigital number, since it uses as much as digits as its factorization.

818940713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 818940713 is about 28617.1401960433. The cubic root of 818940713 is about 935.5869470887.

The spelling of 818940713 in words is "eight hundred eighteen million, nine hundred forty thousand, seven hundred thirteen".