218313168 has 20 divisors (see below), whose sum is σ = 563975808. Its totient is φ = 72771040.

The previous prime is 218313119. The next prime is 218313181. The reversal of 218313168 is 861313812.

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

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 3 ways as a sum of consecutive naturals, for example, 2274048 + ... + 2274143.

Almost surely, 2^218313168 is an apocalyptic number.

It is an amenable number.

218313168 is an abundant number, since it is smaller than the sum of its proper divisors (345662640).

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

218313168 is a wasteful number, since it uses less digits than its factorization.

218313168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4548202 (or 4548196 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 218313168 is about 14775.4244609081. The cubic root of 218313168 is about 602.1342217172.

It can be divided in two parts, 2183 and 13168, that added together give a palindrome (15351).

The spelling of 218313168 in words is "two hundred eighteen million, three hundred thirteen thousand, one hundred sixty-eight".