2185188000 has 96 divisors (see below), whose sum is σ = 7158715200. Its totient is φ = 582713600.

The previous prime is 2185187999. The next prime is 2185188013. The reversal of 2185188000 is 8815812.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79050 + ... + 103049.

It is an arithmetic number, because the mean of its divisors is an integer number (74569950).

Almost surely, 2^2185188000 is an apocalyptic number.

2185188000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185188000 is an abundant number, since it is smaller than the sum of its proper divisors (4973527200).

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

2185188000 is a wasteful number, since it uses less digits than its factorization.

2185188000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182127 (or 182109 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 2185188000 is about 46745.9944808109. The cubic root of 2185188000 is about 1297.6660291472. Note that the first 3 decimals are identical.

The spelling of 2185188000 in words is "two billion, one hundred eighty-five million, one hundred eighty-eight thousand".