It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 838 474 is not a prime number.
For example, 165 838 474 can be divided by 2: 165 838 474 / 2 = 82 919 237.
For 165 838 474 to be a prime number, it would have been required that 165 838 474 has only two divisors, i.e., itself and 1.
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165 838 474 is an even number, because it is evenly divisible by 2: 165 838 474 / 2 = 82 919 237.
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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 165 838 474 is about 12 877.829.
Thus, the square root of 165 838 474 is not an integer, and therefore 165 838 474 is not a square number.
The square of a number (here 165 838 474) is the result of the product of this number (165 838 474) by itself (i.e., 165 838 474 × 165 838 474); the square of 165 838 474 is sometimes called "raising 165 838 474 to the power 2", or "165 838 474 squared".
The square of 165 838 474 is 27 502 399 458 648 676 because 165 838 474 × 165 838 474 = 165 838 4742 = 27 502 399 458 648 676.
As a consequence, 165 838 474 is the square root of 27 502 399 458 648 676.
165 838 474 is a number with 9 digits.
The multiples of 165 838 474 are all integers evenly divisible by 165 838 474, that is all numbers such that the remainder of the division by 165 838 474 is zero. There are infinitely many multiples of 165 838 474. The smallest multiples of 165 838 474 are: