It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 508 719 518 is not a prime number.
For example, 508 719 518 can be divided by 2: 508 719 518 / 2 = 254 359 759.
For 508 719 518 to be a prime number, it would have been required that 508 719 518 has only two divisors, i.e., itself and 1.
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508 719 518 is an even number, because it is evenly divisible by 2: 508 719 518 / 2 = 254 359 759.
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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 508 719 518 is about 22 554.811.
Thus, the square root of 508 719 518 is not an integer, and therefore 508 719 518 is not a square number.
The square of a number (here 508 719 518) is the result of the product of this number (508 719 518) by itself (i.e., 508 719 518 × 508 719 518); the square of 508 719 518 is sometimes called "raising 508 719 518 to the power 2", or "508 719 518 squared".
The square of 508 719 518 is 258 795 547 994 152 320 because 508 719 518 × 508 719 518 = 508 719 5182 = 258 795 547 994 152 320.
As a consequence, 508 719 518 is the square root of 258 795 547 994 152 320.
508 719 518 is a number with 9 digits.
The multiples of 508 719 518 are all integers evenly divisible by 508 719 518, that is all numbers such that the remainder of the division by 508 719 518 is zero. There are infinitely many multiples of 508 719 518. The smallest multiples of 508 719 518 are: