218168226 has 24 divisors (see below), whose sum is σ = 473142384. Its totient is φ = 72654360.

The previous prime is 218168213. The next prime is 218168261. The reversal of 218168226 is 622861812.

218168226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16261 + ... + 26471.

It is an arithmetic number, because the mean of its divisors is an integer number (19714266).

Almost surely, 2^218168226 is an apocalyptic number.

218168226 is an abundant number, since it is smaller than the sum of its proper divisors (254974158).

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

218168226 is a wasteful number, since it uses less digits than its factorization.

218168226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11406 (or 11403 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 218168226 is about 14770.5188128244. The cubic root of 218168226 is about 602.0009363385. Note that the first 3 decimals are identical.

It can be divided in two parts, 2181 and 68226, that added together give a palindrome (70407).

The spelling of 218168226 in words is "two hundred eighteen million, one hundred sixty-eight thousand, two hundred twenty-six".