#### Welcome to the dictionary of numbers

Let's begin with a basic information:

# Number 1

#### Characteristic

Number 1 is Positive and Odd. His inverse number 1 and negative number -1. Number 1 can be divided on 1 without the rest. Besides, it is an ideal square, and it not a prime number. Now let's use trigonometrical functions. By means of sinusoidal function: Sin(1°) gives 0.841, using function of the Cosine of the cos function (1°) gives 0.54 and through the Tangent the tan function(1°) is made by 1.557.

#### Structure

Number 1 has 1 figures which are brought to 1. In English it sounds so: one. Besides, the numbers representing number 1 are: one.
Number 1 - decimal number which means that on the basis 10. 1 can be also presented in different bases, such as the Binary system of calculation also looks: 1, the Octal system of an calculation also, also looks as 1 and 16, in Hexadecimal system of calculation and looks as follows: 1. These are the most widespread systems of calculation, but, of course, there are also others.

 Binary (base two): 1 Octal (base 8): 1 Hexadecimal (base 16): 1 Inverse: 1 Counter: -1 Divisible by: 1 Factorial number: 1 Number of digits: 1 Sum of digits: 1
 Next number: 2 Even / Odd: Odd Unix Timestamp: Wed Dec 12 19:00:01 1969 Perfect square: YES ( 1 ) Prime: NO Positive / Negative: Positive English: one English digits: one Sin: 0.841 Cos: 0.54 Tan: 1.557

#### Other numbers

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21