2185252808 has 16 divisors (see below), whose sum is σ = 4098042060. Its totient is φ = 1092441600.

The previous prime is 2185252807. The next prime is 2185252829. The reversal of 2185252808 is 8082525812.

It can be written as a sum of positive squares in 2 ways, for example, as 2184814564 + 438244 = 46742^2 + 662^2 .

It is not an unprimeable number, because it can be changed into a prime (2185252807) by changing a digit.

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, 36068 + ... + 75308.

Almost surely, 2^2185252808 is an apocalyptic number.

It is an amenable number.

2185252808 is a deficient number, since it is larger than the sum of its proper divisors (1912789252).

2185252808 is a wasteful number, since it uses less digits than its factorization.

2185252808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46208 (or 46204 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 41.

The square root of 2185252808 is about 46746.6876687536. The cubic root of 2185252808 is about 1297.6788576862.

The spelling of 2185252808 in words is "two billion, one hundred eighty-five million, two hundred fifty-two thousand, eight hundred eight".