818684652 has 12 divisors (see below), whose sum is σ = 1910264216. Its totient is φ = 272894880.

The previous prime is 818684641. The next prime is 818684653. The reversal of 818684652 is 256486818.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×818684652² = 1340489118840722208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (818684653) 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 3 ways as a sum of consecutive naturals, for example, 34111849 + ... + 34111872.

Almost surely, 2^818684652 is an apocalyptic number.

It is an amenable number.

818684652 is an abundant number, since it is smaller than the sum of its proper divisors (1091579564).

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

818684652 is a wasteful number, since it uses less digits than its factorization.

818684652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68223728 (or 68223726 counting only the distinct ones).

The product of its digits is 737280, while the sum is 48.

The square root of 818684652 is about 28612.6659366093. The cubic root of 818684652 is about 935.4894258647.

The spelling of 818684652 in words is "eight hundred eighteen million, six hundred eighty-four thousand, six hundred fifty-two".