It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 651 492 is not a prime number.
For example, 490 651 492 can be divided by 2: 490 651 492 / 2 = 245 325 746.
For 490 651 492 to be a prime number, it would have been required that 490 651 492 has only two divisors, i.e., itself and 1.
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490 651 492 is an even number, because it is evenly divisible by 2: 490 651 492 / 2 = 245 325 746.
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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 490 651 492 is about 22 150.654.
Thus, the square root of 490 651 492 is not an integer, and therefore 490 651 492 is not a square number.
The square of a number (here 490 651 492) is the result of the product of this number (490 651 492) by itself (i.e., 490 651 492 × 490 651 492); the square of 490 651 492 is sometimes called "raising 490 651 492 to the power 2", or "490 651 492 squared".
The square of 490 651 492 is 240 738 886 601 826 048 because 490 651 492 × 490 651 492 = 490 651 4922 = 240 738 886 601 826 048.
As a consequence, 490 651 492 is the square root of 240 738 886 601 826 048.
490 651 492 is a number with 9 digits.
The multiples of 490 651 492 are all integers evenly divisible by 490 651 492, that is all numbers such that the remainder of the division by 490 651 492 is zero. There are infinitely many multiples of 490 651 492. The smallest multiples of 490 651 492 are: