Counting number of entities for different languages datasets

How can I find the number of entities in Arabic DBpedia and the same of English DBpedia.
I’m trying to compare the size of Arabic DBpedia to the English one.
Where can I find such statistics if there is no one, how could this be calculated. could anyone please provide a detailed directions of how to do it, which datasets could be used for that, there are many datasets and its not clear which one could provide the answer