1382

1382 (one thousand three hundred eighty-two) is a natural number that follows 1381 and precedes 1383. It is an even and composite integer.

Its prime factorization is 1382 = 2 × 691, where 691 is prime. Therefore, 1382 is a semiprime and has exactly four divisors: 1, 2, 691, and 1382. The Euler totient of 1382 is φ(1382) = 690. Its digits sum to 14, so it is not divisible by 3 or 9, and it is not a perfect square. In modular arithmetic, 1382 ≡ 2 (mod 4).

In various numeral systems, 1382 is represented as follows: binary 10101100110, hexadecimal 0x566, and Roman numerals MCCCLXXXII. In decimal scientific notation, it can be written as 1.382 × 10^3.

As a year, 1382 CE occurred in the late medieval period. In the Julian calendar, it was not a leap year. The year is mainly of historical interest as part of the sequence of years in the 14th century, with regional histories differing across Europe, Asia, and the Middle East.