What kind of star is the sun?
Main Sequence Star.
The Sun is a typical Normal sized star called a Main sequence star. Main sequence stars have a typical lifetime of about 10 - 11 Billion years, this is the time they take to burn all of their hydrogen to helium and transform into a Redgiant. In this Redgiant state it'll burn Helium to carbon for about another 100 million years and eventually end up as a White dwarf.