It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 165 074 998 is not a prime number.
For example, 165 074 998 can be divided by 2: 165 074 998 / 2 = 82 537 499.
For 165 074 998 to be a prime number, it would have been required that 165 074 998 has only two divisors, i.e., itself and 1.
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165 074 998 is an even number, because it is evenly divisible by 2: 165 074 998 / 2 = 82 537 499.
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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 165 074 998 is about 12 848.152.
Thus, the square root of 165 074 998 is not an integer, and therefore 165 074 998 is not a square number.
The square of a number (here 165 074 998) is the result of the product of this number (165 074 998) by itself (i.e., 165 074 998 × 165 074 998); the square of 165 074 998 is sometimes called "raising 165 074 998 to the power 2", or "165 074 998 squared".
The square of 165 074 998 is 27 249 754 964 700 004 because 165 074 998 × 165 074 998 = 165 074 9982 = 27 249 754 964 700 004.
As a consequence, 165 074 998 is the square root of 27 249 754 964 700 004.
165 074 998 is a number with 9 digits.
The multiples of 165 074 998 are all integers evenly divisible by 165 074 998, that is all numbers such that the remainder of the division by 165 074 998 is zero. There are infinitely many multiples of 165 074 998. The smallest multiples of 165 074 998 are: