2186213812 has 12 divisors (see below), whose sum is σ = 3826522980. Its totient is φ = 1092921536.

The previous prime is 2186213797. The next prime is 2186213851. The reversal of 2186213812 is 2183126812.

It is a happy number.

2186213812 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 2 ways, for example, as 1586747556 + 599466256 = 39834^2 + 24484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17863 + ... + 68494.

It is an arithmetic number, because the mean of its divisors is an integer number (318876915).

Almost surely, 2^2186213812 is an apocalyptic number.

It is an amenable number.

2186213812 is a deficient number, since it is larger than the sum of its proper divisors (1640309168).

2186213812 is a wasteful number, since it uses less digits than its factorization.

2186213812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92690 (or 92688 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 2186213812 is about 46756.9653848493. The cubic root of 2186213812 is about 1297.8690556358.

The spelling of 2186213812 in words is "two billion, one hundred eighty-six million, two hundred thirteen thousand, eight hundred twelve".