19381

19381 is a number that falls within the range of 19000 to 19999. It is an odd number, as it cannot be evenly divided by 2. In the decimal system, it is written as "nineteen thousand three hundred eighty-one." In scientific notation, it is expressed as 1.9381 x 10^4. The number 19381 is also known as "nineteen thousand three hundred eighty-one" in words. It is a natural number, which means it is a positive integer. In the context of mathematics, 19381 is a composite number, as it has factors other than 1 and itself. Its prime factorization is 3 x 3 x 7 x 7 x 37. The square root of 19381 is approximately 139.21. In the context of computing, 19381 is used as a port number in the Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) for various applications. It is also used as a reference number in various databases and systems. In the context of astronomy, 19381 is the designation for a minor planet, also known as an asteroid. This asteroid was discovered in 1998 and has an estimated diameter of about 4 kilometers.