2518218 has 12 divisors (see below), whose sum is σ = 5456178. Its totient is φ = 839400.

The previous prime is 2518211. The next prime is 2518231. The reversal of 2518218 is 8128152.

2518218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 1225449 = 1137^2 + 1107^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2518191 and 2518200.

It is not an unprimeable number, because it can be changed into a prime (2518211) 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 5 ways as a sum of consecutive naturals, for example, 69933 + ... + 69968.

2^2518218 is an apocalyptic number.

2518218 is an abundant number, since it is smaller than the sum of its proper divisors (2937960).

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

2518218 is a wasteful number, since it uses less digits than its factorization.

2518218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139909 (or 139906 counting only the distinct ones).

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

The square root of 2518218 is about 1586.8894101354. The cubic root of 2518218 is about 136.0497583210.

It can be divided in two parts, 25182 and 18, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 2518218 in words is "two million, five hundred eighteen thousand, two hundred eighteen".