2109187233 has 12 divisors (see below), whose sum is σ = 3054058020. Its totient is φ = 1402684416.

The previous prime is 2109187187. The next prime is 2109187259. The reversal of 2109187233 is 3327819012.

It can be written as a sum of positive squares in 2 ways, for example, as 1632725649 + 476461584 = 40407^2 + 21828^2 .

It is not a de Polignac number, because 2109187233 - 2³⁰ = 1035445409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2109187733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282816 + ... + 290177.

It is an arithmetic number, because the mean of its divisors is an integer number (254504835).

Almost surely, 2^2109187233 is an apocalyptic number.

It is an amenable number.

2109187233 is a deficient number, since it is larger than the sum of its proper divisors (944870787).

2109187233 is a wasteful number, since it uses less digits than its factorization.

2109187233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573408 (or 573405 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2109187233 is about 45925.8884835122. Note that the first 3 decimals coincide. The cubic root of 2109187233 is about 1282.4439053016.

The spelling of 2109187233 in words is "two billion, one hundred nine million, one hundred eighty-seven thousand, two hundred thirty-three".