It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 491 724 802 is not a prime number.
For example, 491 724 802 can be divided by 2: 491 724 802 / 2 = 245 862 401.
For 491 724 802 to be a prime number, it would have been required that 491 724 802 has only two divisors, i.e., itself and 1.
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491 724 802 is an even number, because it is evenly divisible by 2: 491 724 802 / 2 = 245 862 401.
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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 491 724 802 is about 22 174.869.
Thus, the square root of 491 724 802 is not an integer, and therefore 491 724 802 is not a square number.
The square of a number (here 491 724 802) is the result of the product of this number (491 724 802) by itself (i.e., 491 724 802 × 491 724 802); the square of 491 724 802 is sometimes called "raising 491 724 802 to the power 2", or "491 724 802 squared".
The square of 491 724 802 is 241 793 280 901 939 200 because 491 724 802 × 491 724 802 = 491 724 8022 = 241 793 280 901 939 200.
As a consequence, 491 724 802 is the square root of 241 793 280 901 939 200.
491 724 802 is a number with 9 digits.
The multiples of 491 724 802 are all integers evenly divisible by 491 724 802, that is all numbers such that the remainder of the division by 491 724 802 is zero. There are infinitely many multiples of 491 724 802. The smallest multiples of 491 724 802 are: