818485813 has 8 divisors (see below), whose sum is σ = 825138432. Its totient is φ = 811843296.

The previous prime is 818485783. The next prime is 818485847. The reversal of 818485813 is 318584818.

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

It is a cyclic number.

It is not a de Polignac number, because 818485813 - 2⁹ = 818485301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818485883) 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 in 7 ways as a sum of consecutive naturals, for example, 301006 + ... + 303712.

It is an arithmetic number, because the mean of its divisors is an integer number (103142304).

Almost surely, 2^818485813 is an apocalyptic number.

It is an amenable number.

818485813 is a deficient number, since it is larger than the sum of its proper divisors (6652619).

818485813 is a wasteful number, since it uses less digits than its factorization.

818485813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051.

The product of its digits is 245760, while the sum is 46.

The square root of 818485813 is about 28609.1910581198. The cubic root of 818485813 is about 935.4136836999.

The spelling of 818485813 in words is "eight hundred eighteen million, four hundred eighty-five thousand, eight hundred thirteen".