818055612 has 72 divisors (see below), whose sum is σ = 2339430912. Its totient is φ = 247892400.

The previous prime is 818055599. The next prime is 818055613. The reversal of 818055612 is 216550818.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818055613) 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 23 ways as a sum of consecutive naturals, for example, 27564 + ... + 48947.

It is an arithmetic number, because the mean of its divisors is an integer number (32492096).

Almost surely, 2^818055612 is an apocalyptic number.

It is an amenable number.

818055612 is an abundant number, since it is smaller than the sum of its proper divisors (1521375300).

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

818055612 is a wasteful number, since it uses less digits than its factorization.

818055612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76541 (or 76527 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 818055612 is about 28601.6714896175. The cubic root of 818055612 is about 935.2497686508.

The spelling of 818055612 in words is "eight hundred eighteen million, fifty-five thousand, six hundred twelve".