1 / 8Actor Amitabh Bachchan is known by many names like 'Big B', 'Bollywood's Shahenshah', 'Megastar', 'Mahanayak'.2 / 8Big B has been ruling the hearts of the audience for the last several years on the strength of his acting.3 / 8In addition to the professional life of this evergreen actor in Bollywood, fans also know a lot about his personal life. But there is one thing about him that very few people know.4 / 8The actor, popularly known as Amitabh Bachchan, is said to have a different name than his real name.5 / 8He had revealed his last name in a program.6 / 8Amitabh Bachchan's real last name is not Bachchan but Srivastava. Not only that, he has also changed his name. So even Amitabh is not his real name.7 / 8Before Big B was born, the family had decided to name him Inquilab. But, after his birth, his name was changed to Amitabh.8 / 8Therefore, the real name of Big B is said to be Inquilab Srivastava. He made his Bollywood debut with the film 'Saat Hindustani'. He has acted in more than 180 films in a career spanning more than four decades.