818960856 has 64 divisors (see below), whose sum is σ = 2477537280. Its totient is φ = 220224000.

The previous prime is 818960851. The next prime is 818960893. The reversal of 818960856 is 658069818.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 818960799 and 818960808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818960851) 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 15 ways as a sum of consecutive naturals, for example, 140520 + ... + 146231.

It is an arithmetic number, because the mean of its divisors is an integer number (38711520).

Almost surely, 2^818960856 is an apocalyptic number.

It is an amenable number.

818960856 is an abundant number, since it is smaller than the sum of its proper divisors (1658576424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818960856 is a wasteful number, since it uses less digits than its factorization.

818960856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286784 (or 286780 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 818960856 is about 28617.4921333090. The cubic root of 818960856 is about 935.5946177187.

The spelling of 818960856 in words is "eight hundred eighteen million, nine hundred sixty thousand, eight hundred fifty-six".