Barron Trump, celebrating 19th birthday, praised as 'smart guy' by his father

"Maybe technology," Trump said. "He can look at a computer. I try I turn it off. As I turn it off I turn off his laptop. I said, oh good. And I go back. Five minutes later, he's got his laptop. I say, how did you do that? None of your business, dad. No. He's got an unbelievable aptitude in technology."

"Barron's a very smart guy," the president said.

Barron Trump is a first-year student at New York University (NYU) in the Stern School of Business.

Trump went on to praise all his other four children - Eric, Donald Jr., Tiffany and Ivanka - during the interview, telling Ingraham that they're "very smart" and were "always good students."

"I'm lucky," the president said. "Look, you have to be a little bit lucky, too.

Fox News Digital's Ashley J. DiMella contributed to this report.