1178

1178 is a natural number that comes after 1177 and before 1179. In mathematics, it is even and composite with prime factorization 2 × 19 × 31, making it squarefree. The eight positive divisors are 1, 2, 19, 31, 38, 62, 589, and 1178. The sum of its digits is 17, so it is not divisible by 3. In numeral bases it is represented as 10010011010 in binary and as 0x49A in hexadecimal. The square root is approximately 34.34, placing it between 34^2 = 1156 and 35^2 = 1225.

As a year, 1178 AD falls in the High Middle Ages. The period was characterized by political power struggles in Europe, the Crusades in the Levant, and scholarly activity in growing medieval institutions. Specific events and chronology vary by region and source, but the year sits among broader medieval developments of church-state relations, monarchy, and cultural exchange.

1178 may also appear in non-historical contexts as a catalog, serial, or model number, illustrating how such numbers function as identifiers in various systems.