2118168 has 96 divisors (see below), whose sum is σ = 6464640. Its totient is φ = 622080.

The previous prime is 2118163. The next prime is 2118169. The reversal of 2118168 is 8618112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28980 + ... + 29052.

It is an arithmetic number, because the mean of its divisors is an integer number (67340).

2^2118168 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 2118168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3232320).

2118168 is an abundant number, since it is smaller than the sum of its proper divisors (4346472).

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

2118168 is a wasteful number, since it uses less digits than its factorization.

2118168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 122 counting only the distinct ones).

The product of its digits is 768, while the sum is 27.

The square root of 2118168 is about 1455.3927305027. The cubic root of 2118168 is about 128.4261512519.

The spelling of 2118168 in words is "two million, one hundred eighteen thousand, one hundred sixty-eight".