2185544012 has 24 divisors (see below), whose sum is σ = 3864579600. Its totient is φ = 1081428480.

The previous prime is 2185543993. The next prime is 2185544029. The reversal of 2185544012 is 2104455812.

It is a super-2 number, since 2×2185544012² = 9553205256778112288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2185544012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175364 + ... + 187412.

It is an arithmetic number, because the mean of its divisors is an integer number (161024150).

Almost surely, 2^2185544012 is an apocalyptic number.

It is an amenable number.

2185544012 is a deficient number, since it is larger than the sum of its proper divisors (1679035588).

2185544012 is a wasteful number, since it uses less digits than its factorization.

2185544012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12521 (or 12519 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 2185544012 is about 46749.8022669615. The cubic root of 2185544012 is about 1297.7364974687.

Adding to 2185544012 its reverse (2104455812), we get a palindrome (4289999824).

The spelling of 2185544012 in words is "two billion, one hundred eighty-five million, five hundred forty-four thousand, twelve".