2186218444 has 6 divisors (see below), whose sum is σ = 3825882284. Its totient is φ = 1093109220.

The previous prime is 2186218417. The next prime is 2186218453. The reversal of 2186218444 is 4448126812.

It is a super-2 number, since 2×2186218444² = 9559102169771562272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2186218397 and 2186218406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273277302 + ... + 273277309.

Almost surely, 2^2186218444 is an apocalyptic number.

It is an amenable number.

2186218444 is a deficient number, since it is larger than the sum of its proper divisors (1639663840).

2186218444 is a wasteful number, since it uses less digits than its factorization.

2186218444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546554615 (or 546554613 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The square root of 2186218444 is about 46757.0149175501. The cubic root of 2186218444 is about 1297.8699722471.

The spelling of 2186218444 in words is "two billion, one hundred eighty-six million, two hundred eighteen thousand, four hundred forty-four".