It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 567 908 is not a prime number.
For example, 491 567 908 can be divided by 2: 491 567 908 / 2 = 245 783 954.
For 491 567 908 to be a prime number, it would have been required that 491 567 908 has only two divisors, i.e., itself and 1.
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491 567 908 is an even number, because it is evenly divisible by 2: 491 567 908 / 2 = 245 783 954.
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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 491 567 908 is about 22 171.331.
Thus, the square root of 491 567 908 is not an integer, and therefore 491 567 908 is not a square number.
The square of a number (here 491 567 908) is the result of the product of this number (491 567 908) by itself (i.e., 491 567 908 × 491 567 908); the square of 491 567 908 is sometimes called "raising 491 567 908 to the power 2", or "491 567 908 squared".
The square of 491 567 908 is 241 639 008 175 496 448 because 491 567 908 × 491 567 908 = 491 567 9082 = 241 639 008 175 496 448.
As a consequence, 491 567 908 is the square root of 241 639 008 175 496 448.
491 567 908 is a number with 9 digits.
The multiples of 491 567 908 are all integers evenly divisible by 491 567 908, that is all numbers such that the remainder of the division by 491 567 908 is zero. There are infinitely many multiples of 491 567 908. The smallest multiples of 491 567 908 are: