818413 has 2 divisors, whose sum is σ = 818414. Its totient is φ = 818412.

The previous prime is 818399. The next prime is 818429. The reversal of 818413 is 314818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769129 + 49284 = 877^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 818413 - 2¹⁷ = 687341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409206 + 409207.

It is an arithmetic number, because the mean of its divisors is an integer number (409207).

2⁸¹⁸⁴¹³ is an apocalyptic number.

It is an amenable number.

818413 is a deficient number, since it is larger than the sum of its proper divisors (1).

818413 is an equidigital number, since it uses as much as digits as its factorization.

818413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 25.

The square root of 818413 is about 904.6618152658. The cubic root of 818413 is about 93.5385944552.

The spelling of 818413 in words is "eight hundred eighteen thousand, four hundred thirteen".