It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 490 561 118 is not a prime number.
For example, 490 561 118 can be divided by 2: 490 561 118 / 2 = 245 280 559.
For 490 561 118 to be a prime number, it would have been required that 490 561 118 has only two divisors, i.e., itself and 1.
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490 561 118 is an even number, because it is evenly divisible by 2: 490 561 118 / 2 = 245 280 559.
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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 490 561 118 is about 22 148.614.
Thus, the square root of 490 561 118 is not an integer, and therefore 490 561 118 is not a square number.
The square of a number (here 490 561 118) is the result of the product of this number (490 561 118) by itself (i.e., 490 561 118 × 490 561 118); the square of 490 561 118 is sometimes called "raising 490 561 118 to the power 2", or "490 561 118 squared".
The square of 490 561 118 is 240 650 210 493 409 920 because 490 561 118 × 490 561 118 = 490 561 1182 = 240 650 210 493 409 920.
As a consequence, 490 561 118 is the square root of 240 650 210 493 409 920.
490 561 118 is a number with 9 digits.
The multiples of 490 561 118 are all integers evenly divisible by 490 561 118, that is all numbers such that the remainder of the division by 490 561 118 is zero. There are infinitely many multiples of 490 561 118. The smallest multiples of 490 561 118 are: