2185312488 has 16 divisors (see below), whose sum is σ = 5463281280. Its totient is φ = 728437488.

The previous prime is 2185312469. The next prime is 2185312541. The reversal of 2185312488 is 8842135812.

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, 45527320 + ... + 45527367.

It is an arithmetic number, because the mean of its divisors is an integer number (341455080).

Almost surely, 2^2185312488 is an apocalyptic number.

It is an amenable number.

2185312488 is an abundant number, since it is smaller than the sum of its proper divisors (3277968792).

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

2185312488 is a wasteful number, since it uses less digits than its factorization.

2185312488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91054696 (or 91054692 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 2185312488 is about 46747.3259983927. The cubic root of 2185312488 is about 1297.6906709295.

The spelling of 2185312488 in words is "two billion, one hundred eighty-five million, three hundred twelve thousand, four hundred eighty-eight".