How big is the star deneb?

Deneb, a prominent star in the constellation Cygnus, is approximately 200,000 times more luminous than the Sun and has an estimated radius around 19 times greater than that of the Sun. It is classified as a supergiant star, specifically a spectral type A2 Ia, and is located about 1,425 light-years away from Earth. Due to its immense size and brightness, Deneb is one of the most luminous stars visible in the night sky.