169 is an odd 3-digits composite number following 168
and preceding 170 . In scientific notation, it is written as 1.69 × 10^2.
The sum of its digits is 16. It has a total of 2 prime factors and 3 positive divisors.
There are 156 positive integers (up to 169) that are relatively prime to 169.
169 has 3 divisors, whose sum is 183
The reverse of 169 is 961
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 3
Sum of Digits 16
Digital Root 7
Name
one hundred sixty-nine
Scientific notation
1.69 × 10^2
Engineering notation
1.69 × 10^0
Prime Factorization
13 × 13
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
13
Product of the distinct prime numbers
The prime factorization of 169 is 13 × 13.
Since it has a total of 2 prime factors.
10 , 8 , 92 , 44 , 234 , 786 , 406 , 2046 , 60806 , 60469 , 541994 , 734769 , 9171449 , 3501084 , 81138750 , 70112873 , 846508743 , 261570921 , 9191874320 , 8178607680
n×2
338
n×3
507
n×4
676
n×5
845
n÷2
84.5
n÷3
56.333333333333
n÷3
42.25
n÷5
33.8
n2
28561
n3
4826809
n4
815730721
n5
137858491849
2 √n
13
3 √n
5.5287748136789
4 √n
3.605551275464
5 √n
2.7898274358891
3 divisors
τ
Total Divisors
3
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-168
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.33333333333333
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
3
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 169 can be divided by 3 positive divisors.
The sum of these divisors (counting 169) is 1, the average is 0.33333333333333.
Base
System
Value
2
Binary
10101001
3
Ternary
20021
4
Quaternary
2221
5
Quinary
1134
6
Senary
441
8
Octal
251
10
Decimal
169
12
Duodecimal
121
16
Hexadecimal
a9
20
Vigesimal
89
36
Base36
4p
md5
3636638817772e42b59d74cff571fbb3
sha1
2659fc519890c924f82b4475ddd71b058178d02b
sha256
f57e5cb1f4532c008183057ecc94283801fcb5afe2d1c190e3dfd38c4da08042
sha512
f43d11b9e338dd9588efbb77228fee0d2ad406c3fa808e4fa5020884fe4df3e782b11205ced90f7080976ac1d3c74afc54da03613eb175e956f94108879e67c2
ripemd-160
1876d84aeba0e9530b41236addc8b50697620e6b
Diameter
338
Circumference
1061.8583169134
Area
89727.027779178
Volume
20218490.259575
Surface area
358908.11111671
Circumference
1061.8583169134
Perimeter
676
Area
28561
Diagonal
239.00209204105
Surface area
171366
Volume
4826809
Space diagonal
292.71658647914
Perimeter
507
Area
12367.275778744
Altitude
146.35829323957
Surface area
12367.275778744
Volume
568844.89589871
Height
79.667364013684