818018136 has 96 divisors (see below), whose sum is σ = 2460618000. Its totient is φ = 251686656.

The previous prime is 818018119. The next prime is 818018137. The reversal of 818018136 is 631810818.

818018136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 818018136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818018137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25300 + ... + 47708.

Almost surely, 2^818018136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818018136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230309000).

818018136 is an abundant number, since it is smaller than the sum of its proper divisors (1642599864).

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

818018136 is a wasteful number, since it uses less digits than its factorization.

818018136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22450 (or 22427 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 818018136 is about 28601.0163455777. The cubic root of 818018136 is about 935.2354868363.

The spelling of 818018136 in words is "eight hundred eighteen million, eighteen thousand, one hundred thirty-six".