181818330036 has 72 divisors (see below), whose sum is σ = 494156609856. Its totient is φ = 51879703680.

The previous prime is 181818330019. The next prime is 181818330041. The reversal of 181818330036 is 630033818181.

It is a super-2 number, since 2×181818330036² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 181818330036.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244305 + ... + 650631.

It is an arithmetic number, because the mean of its divisors is an integer number (6863286248).

Almost surely, 2^181818330036 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 181818330036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247078304928).

181818330036 is an abundant number, since it is smaller than the sum of its proper divisors (312338279820).

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

181818330036 is a wasteful number, since it uses less digits than its factorization.

181818330036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407109 (or 407100 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 181818330036 in words is "one hundred eighty-one billion, eight hundred eighteen million, three hundred thirty thousand, thirty-six".