2185189153 has 24 divisors (see below), whose sum is σ = 2590846080. Its totient is φ = 1837170720.

The previous prime is 2185189109. The next prime is 2185189157. The reversal of 2185189153 is 3519815812.

It is not a de Polignac number, because 2185189153 - 2⁹ = 2185188641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185189157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1383118 + ... + 1384696.

It is an arithmetic number, because the mean of its divisors is an integer number (107951920).

Almost surely, 2^2185189153 is an apocalyptic number.

It is an amenable number.

2185189153 is a deficient number, since it is larger than the sum of its proper divisors (405656927).

2185189153 is a wasteful number, since it uses less digits than its factorization.

2185189153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2110 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The square root of 2185189153 is about 46746.0068134167. The cubic root of 2185189153 is about 1297.6662573821. Note that the first 3 decimals are identical.

The spelling of 2185189153 in words is "two billion, one hundred eighty-five million, one hundred eighty-nine thousand, one hundred fifty-three".