This number is a prime.
A palindromic prime containing nineteen letters in its English name "nine hundred nineteen." Note that 9 + 1 + 9 equals nineteen and you get nineteen in either direction (left or right) from the center. [Post]
This prime is the 18th centered hexagonal number. Note that we can use the digits of 919 to write 18 = (9 * 1) + 9 = 9 + (1 * 9). [Post]
According to the Australian Bureau Of Meteorology, the prime number 919 millimetres is the record high mean annual rainfall over the State Of Victoria. Note that the year in which this occurred (1973) is also prime!
Modern studies have shown that the earliest known version of the beast number (666) may have been 919 turned upside down.
The largest known palindromic prime for which the next prime is also palindromic. [Beedassy]
The smallest palindromic prime equal to the difference of consecutive cubes (18^3-17^3). [Silva]
The sum of the digits of first non-trivial palindromic primes up to 919 is another palindromic prime. [Silva]
The smallest palindromic prime which has a multiplicative persistence of two. [Wesolowski]
919 equals 91+81+71+61+51+41+31+21+11+1+11+21+31+41+51+61+71+81+91. [Silva]
The only prime less than a googol of form 91k9. [Loungrides]
The smallest prime formed by concatenating in ascending order the first n consecutive numbers ending with 9, (n=2). The next such prime is for n=26. [Loungrides]
The hundredth palindrome and 19th prime palindrome. [Gaydos]
Modern Galápagos tortoises can weigh up to 919 lb. [Davis]
The 19th palindromic prime ending in 19 with sum of digits as 19. [Gupta]
919 = 1 + 2 × 3 + 4 × 5 × 6 × 7 + 8 × 9. [Chetabahana]