2185489884 has 48 divisors (see below), whose sum is σ = 5181926400. Its totient is φ = 716745216.

The previous prime is 2185489879. The next prime is 2185489903. The reversal of 2185489884 is 4889845812.

2185489884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1156012 + ... + 1157900.

It is an arithmetic number, because the mean of its divisors is an integer number (107956800).

Almost surely, 2^2185489884 is an apocalyptic number.

It is an amenable number.

2185489884 is an abundant number, since it is smaller than the sum of its proper divisors (2996436516).

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

2185489884 is a wasteful number, since it uses less digits than its factorization.

2185489884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402 (or 3400 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 57.

The square root of 2185489884 is about 46749.2233518376. The cubic root of 2185489884 is about 1297.7257839712.

The spelling of 2185489884 in words is "two billion, one hundred eighty-five million, four hundred eighty-nine thousand, eight hundred eighty-four".