318818136 has 256 divisors, whose sum is σ = 1076060160. Its totient is φ = 76308480.

The previous prime is 318818117. The next prime is 318818183. The reversal of 318818136 is 631818813.

It is a Harshad number since it is a multiple of its sum of digits (39).

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

It is a junction number, because it is equal to n+sod(n) for n = 318818094 and 318818103.

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 63 ways as a sum of consecutive naturals, for example, 1150830 + ... + 1151106.

It is an arithmetic number, because the mean of its divisors is an integer number (4203360).

Almost surely, 2^318818136 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 318818136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538030080).

318818136 is an abundant number, since it is smaller than the sum of its proper divisors (757242024).

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

318818136 is a wasteful number, since it uses less digits than its factorization.

318818136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 350 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 318818136 is about 17855.4791590705. The cubic root of 318818136 is about 683.1472736084.

The spelling of 318818136 in words is "three hundred eighteen million, eight hundred eighteen thousand, one hundred thirty-six".