818087812 has 12 divisors (see below), whose sum is σ = 1434096720. Its totient is φ = 408345896.

The previous prime is 818087791. The next prime is 818087813. The reversal of 818087812 is 218780818.

It is not an unprimeable number, because it can be changed into a prime (818087813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171862 + ... + 176557.

It is an arithmetic number, because the mean of its divisors is an integer number (119508060).

Almost surely, 2^818087812 is an apocalyptic number.

It is an amenable number.

818087812 is a deficient number, since it is larger than the sum of its proper divisors (616008908).

818087812 is a wasteful number, since it uses less digits than its factorization.

818087812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349010 (or 349008 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 43.

The square root of 818087812 is about 28602.2343882432. The cubic root of 818087812 is about 935.2620394740.

The spelling of 818087812 in words is "eight hundred eighteen million, eighty-seven thousand, eight hundred twelve".