Discover a lot of information on the number 1: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!
Numerology and symbolism of the number 1
The number 1 (one) represents the uniqueness, the unique, a starting point, a beginning.
Mathematical properties of 1
Questions and answers |
Is 1 a prime number? |
Yes |
Is 1 a perfect number? |
No |
Number of divisors |
1 |
List of dividers |
1 |
Sum of divisors |
1 |
Prime factorization |
1 |
Prime factors |
1 |
How to write / spell 1 in letters?
In letters, the number 1 is written as: One. And in other languages? how does it spell?
1 in other languages |
Write 1 in english |
One |
Write 1 in french |
Un |
Write 1 in spanish |
Uno |
Write 1 in portuguese |
Um |
Mathematical representations and links
Other ways to write 1 |
In letter |
One |
In roman numeral |
I |
In binary |
1 |
In octal |
1 |
In hexadecimal |
1 |
In US dollars |
USD 1.00 ($) |
In euros |
1,00 EUR (€) |
Some related numbers |
Previous number |
0 |
Next number |
2 |
Next prime number |
2 |
Mathematical operations
Operations and solutions |
1*2 |
= |
2 |
The double of 1 is 2 |
1*3 |
= |
3 |
The triple of 1 is 3 |
1/2 |
= |
0.5 |
The half of 1 is 0.500000 |
1/3 |
= |
0.33333333333333 |
The third of 1 is 0.333333 |
12 |
= |
1 |
The square of 1 is 1.000000 |
13 |
= |
1 |
The cube of 1 is 1.000000 |
√1 |
= |
1 |
The square root of 1 is 1.000000 |
log(1) |
= |
0 |
The natural (Neperian) logarithm of 1 is 0.000000 |
log10(1) |
= |
0 |
The decimal logarithm (base 10) of 1 is 0.000000 |
sin(1) |
= |
0.8414709848079 |
The sine of 1 is 0.841471 |
cos(1) |
= |
0.54030230586814 |
The cosine of 1 is 0.540302 |
tan(1) |
= |
1.5574077246549 |
The tangent of 1 is 1.557408 |