2185018808 has 16 divisors (see below), whose sum is σ = 4682183280. Its totient is φ = 936436608.

The previous prime is 2185018783. The next prime is 2185018817. The reversal of 2185018808 is 8088105812.

2185018808 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 3 ways as a sum of consecutive naturals, for example, 19509041 + ... + 19509152.

It is an arithmetic number, because the mean of its divisors is an integer number (292636455).

Almost surely, 2^2185018808 is an apocalyptic number.

2185018808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2185018808 is an abundant number, since it is smaller than the sum of its proper divisors (2497164472).

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

2185018808 is a wasteful number, since it uses less digits than its factorization.

2185018808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39018206 (or 39018202 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 41.

The square root of 2185018808 is about 46744.1847506190. The cubic root of 2185018808 is about 1297.6325369294.

The spelling of 2185018808 in words is "two billion, one hundred eighty-five million, eighteen thousand, eight hundred eight".