2218158 has 16 divisors (see below), whose sum is σ = 4929360. Its totient is φ = 739368.

The previous prime is 2218157. The next prime is 2218171. The reversal of 2218158 is 8518122.

2218158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20485 + ... + 20592.

It is an arithmetic number, because the mean of its divisors is an integer number (308085).

2^2218158 is an apocalyptic number.

2218158 is an abundant number, since it is smaller than the sum of its proper divisors (2711202).

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

2218158 is a wasteful number, since it uses less digits than its factorization.

2218158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41088 (or 41082 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2218158 is about 1489.3481795739. The cubic root of 2218158 is about 130.4159850303.

The spelling of 2218158 in words is "two million, two hundred eighteen thousand, one hundred fifty-eight".