It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 489 648 916 is not a prime number.
For example, 489 648 916 can be divided by 2: 489 648 916 / 2 = 244 824 458.
For 489 648 916 to be a prime number, it would have been required that 489 648 916 has only two divisors, i.e., itself and 1.
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489 648 916 is an even number, because it is evenly divisible by 2: 489 648 916 / 2 = 244 824 458.
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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 489 648 916 is about 22 128.012.
Thus, the square root of 489 648 916 is not an integer, and therefore 489 648 916 is not a square number.
The square of a number (here 489 648 916) is the result of the product of this number (489 648 916) by itself (i.e., 489 648 916 × 489 648 916); the square of 489 648 916 is sometimes called "raising 489 648 916 to the power 2", or "489 648 916 squared".
The square of 489 648 916 is 239 756 060 939 975 040 because 489 648 916 × 489 648 916 = 489 648 9162 = 239 756 060 939 975 040.
As a consequence, 489 648 916 is the square root of 239 756 060 939 975 040.
489 648 916 is a number with 9 digits.
The multiples of 489 648 916 are all integers evenly divisible by 489 648 916, that is all numbers such that the remainder of the division by 489 648 916 is zero. There are infinitely many multiples of 489 648 916. The smallest multiples of 489 648 916 are: