818365813 has 8 divisors (see below), whose sum is σ = 845883360. Its totient is φ = 791303280.

The previous prime is 818365763. The next prime is 818365837. The reversal of 818365813 is 318563818.

818365813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 818365813 - 2¹³ = 818357621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 818365813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818365883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110095 + ... + 117292.

It is an arithmetic number, because the mean of its divisors is an integer number (105735420).

Almost surely, 2^818365813 is an apocalyptic number.

It is an amenable number.

818365813 is a deficient number, since it is larger than the sum of its proper divisors (27517547).

818365813 is a wasteful number, since it uses less digits than its factorization.

818365813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227507.

The product of its digits is 138240, while the sum is 43.

The square root of 818365813 is about 28607.0937531235. The cubic root of 818365813 is about 935.3679671152.

The spelling of 818365813 in words is "eight hundred eighteen million, three hundred sixty-five thousand, eight hundred thirteen".