1693 is a prime number.
1693 is a prime that results from merging four successive digits in the decimal expansion of pi (A104824).
1693 is a prime whose binary representation (11010011101) is also the decimal representation of a prime (A065720).
1693 is the smallest prime greater than 412 (A007491).
1693 has a representation as a sum of two squares: 1693 = 182 + 372.
1693 is the hypotenuse of a primitive Pythagorean triple: 16932 = 10452 + 13322.
1693 divides 924 - 1.
Pope Clement XIII was born in the prime year 1693; he was the most recent pope to be born in a prime year.
Source: Prime Curios!