It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 138 563 is not a prime number.
For example, 490 138 563 can be divided by 3: 490 138 563 / 3 = 163 379 521.
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For 490 138 563 to be a prime number, it would have been required that 490 138 563 has only two divisors, i.e., itself and 1.
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490 138 563 is an odd number, because it is not evenly divisible by 2.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 490 138 563 is about 22 139.073.
Thus, the square root of 490 138 563 is not an integer, and therefore 490 138 563 is not a square number.
The square of a number (here 490 138 563) is the result of the product of this number (490 138 563) by itself (i.e., 490 138 563 × 490 138 563); the square of 490 138 563 is sometimes called "raising 490 138 563 to the power 2", or "490 138 563 squared".
The square of 490 138 563 is 240 235 810 939 704 960 because 490 138 563 × 490 138 563 = 490 138 5632 = 240 235 810 939 704 960.
As a consequence, 490 138 563 is the square root of 240 235 810 939 704 960.
490 138 563 is a number with 9 digits.
The multiples of 490 138 563 are all integers evenly divisible by 490 138 563, that is all numbers such that the remainder of the division by 490 138 563 is zero. There are infinitely many multiples of 490 138 563. The smallest multiples of 490 138 563 are: