It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 724 788 is not a prime number.
For example, 491 724 788 can be divided by 2: 491 724 788 / 2 = 245 862 394.
For 491 724 788 to be a prime number, it would have been required that 491 724 788 has only two divisors, i.e., itself and 1.
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491 724 788 is an even number, because it is evenly divisible by 2: 491 724 788 / 2 = 245 862 394.
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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 491 724 788 is about 22 174.868.
Thus, the square root of 491 724 788 is not an integer, and therefore 491 724 788 is not a square number.
The square of a number (here 491 724 788) is the result of the product of this number (491 724 788) by itself (i.e., 491 724 788 × 491 724 788); the square of 491 724 788 is sometimes called "raising 491 724 788 to the power 2", or "491 724 788 squared".
The square of 491 724 788 is 241 793 267 133 644 928 because 491 724 788 × 491 724 788 = 491 724 7882 = 241 793 267 133 644 928.
As a consequence, 491 724 788 is the square root of 241 793 267 133 644 928.
491 724 788 is a number with 9 digits.
The multiples of 491 724 788 are all integers evenly divisible by 491 724 788, that is all numbers such that the remainder of the division by 491 724 788 is zero. There are infinitely many multiples of 491 724 788. The smallest multiples of 491 724 788 are: