818117852 has 6 divisors (see below), whose sum is σ = 1431706248. Its totient is φ = 409058924.

The previous prime is 818117851. The next prime is 818117891. The reversal of 818117852 is 258711818.

It is a super-2 number, since 2×818117852² = 1338633639522187808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818117851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102264728 + ... + 102264735.

It is an arithmetic number, because the mean of its divisors is an integer number (238617708).

Almost surely, 2^818117852 is an apocalyptic number.

It is an amenable number.

818117852 is a deficient number, since it is larger than the sum of its proper divisors (613588396).

818117852 is a wasteful number, since it uses less digits than its factorization.

818117852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204529467 (or 204529465 counting only the distinct ones).

The product of its digits is 35840, while the sum is 41.

The square root of 818117852 is about 28602.7595172214. The cubic root of 818117852 is about 935.2734868710.

The spelling of 818117852 in words is "eight hundred eighteen million, one hundred seventeen thousand, eight hundred fifty-two".