The month-first convention is American. Still, it gets rid of those little words (the, of) without causing confusion. The rest of the English-speaking world typically puts the day first.
I would read the date as "the eighteenth of August, two thousand and fourteen". I actually advise getting comfortable with both conventions. Don't just opt for the easier one; that'd be limiting yourself.
For the number, say "eleven thousand, one hundred and fifty". Dropping the "and" is possible, but not as common as people make out.