818234136 has 80 divisors (see below), whose sum is σ = 2313428040. Its totient is φ = 270172800.

The previous prime is 818234113. The next prime is 818234141. The reversal of 818234136 is 631432818.

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

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 818234136.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 63436 + ... + 75236.

Almost surely, 2^818234136 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 818234136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156714020).

818234136 is an abundant number, since it is smaller than the sum of its proper divisors (1495193904).

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

818234136 is a wasteful number, since it uses less digits than its factorization.

818234136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11926 (or 11913 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 818234136 is about 28604.7921859258. The cubic root of 818234136 is about 935.3177967829.

The spelling of 818234136 in words is "eight hundred eighteen million, two hundred thirty-four thousand, one hundred thirty-six".