2185544044 has 12 divisors (see below), whose sum is σ = 3833338824. Its totient is φ = 1090304384.

The previous prime is 2185544029. The next prime is 2185544099. The reversal of 2185544044 is 4404455812.

It is a junction number, because it is equal to n+sod(n) for n = 2185543994 and 2185544012.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 614917 + ... + 618460.

It is an arithmetic number, because the mean of its divisors is an integer number (319444902).

Almost surely, 2^2185544044 is an apocalyptic number.

It is an amenable number.

2185544044 is a deficient number, since it is larger than the sum of its proper divisors (1647794780).

2185544044 is a wasteful number, since it uses less digits than its factorization.

2185544044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233824 (or 1233822 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

The square root of 2185544044 is about 46749.8026092090. The cubic root of 2185544044 is about 1297.7365038024.

Adding to 2185544044 its reverse (4404455812), we get a palindrome (6589999856).

The spelling of 2185544044 in words is "two billion, one hundred eighty-five million, five hundred forty-four thousand, forty-four".