2186118 has 48 divisors (see below), whose sum is σ = 5280912. Its totient is φ = 648000.

The previous prime is 2186113. The next prime is 2186141. The reversal of 2186118 is 8116812.

It is a super-2 number, since 2×2186118² = 9558223819848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2186091 and 2186100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186113) 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, 11988 + ... + 12168.

It is an arithmetic number, because the mean of its divisors is an integer number (110019).

2^2186118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2186118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640456).

2186118 is an abundant number, since it is smaller than the sum of its proper divisors (3094794).

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

2186118 is a wasteful number, since it uses less digits than its factorization.

2186118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 258 counting only the distinct ones).

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

The square root of 2186118 is about 1478.5526706885. The cubic root of 2186118 is about 129.7850095422.

It can be divided in two parts, 2186 and 118, that added together give a square (2304 = 48²).

The spelling of 2186118 in words is "two million, one hundred eighty-six thousand, one hundred eighteen".