818560813 has 16 divisors (see below), whose sum is σ = 947531520. Its totient is φ = 692649216.

The previous prime is 818560783. The next prime is 818560819. The reversal of 818560813 is 318065818.

It is not a de Polignac number, because 818560813 - 2¹³ = 818552621 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 (818560819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210856 + ... + 214702.

It is an arithmetic number, because the mean of its divisors is an integer number (59220720).

Almost surely, 2^818560813 is an apocalyptic number.

It is an amenable number.

818560813 is a deficient number, since it is larger than the sum of its proper divisors (128970707).

818560813 is a wasteful number, since it uses less digits than its factorization.

818560813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 818560813 is about 28610.5017956694. The cubic root of 818560813 is about 935.4422542964.

The spelling of 818560813 in words is "eight hundred eighteen million, five hundred sixty thousand, eight hundred thirteen".