161909969 is an odd 9-digits composite number following 161909968
and preceding 161909970 . In scientific notation, it is written as 1.61909969 × 10^8.
The sum of its digits is 50. It has a total of 4 prime factors and 16 positive divisors.
There are 147129600 positive integers (up to 161909969) that are relatively prime to 161909969.
161909969 has 16 divisors, whose sum is 177100560
The reverse of 161909969 is 969909161
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 50
Digital Root 5
Name
one hundred sixty-one million nine hundred nine thousand nine hundred sixty-nine
Scientific notation
1.61909969 × 10^8
Engineering notation
1.61909969 × 10^6
Prime Factorization
13 × 101 × 389 × 317
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
161909969
Product of the distinct prime numbers
The prime factorization of 161909969 is 13 × 101 × 389 × 317.
Since it has a total of 4 prime factors.
9 , 4 , 72 , 6 , 779 , 647 , 239 , 8248 , 52608 , 37696 , 964954 , 671914 , 7345994 , 2822185 , 61062383 , 95618777 , 267350957 , 808534609 , 7802182298 , 9914961306
n×2
323819938
n×3
485729907
n×4
647639876
n×5
809549845
n÷2
80954984.5
n÷3
53969989.666667
n÷3
40477492.25
n÷5
32381993.8
n2
26214838061580961
n3
4.2444436178906E+24
n4
6.8721773459491E+32
n5
1.1126740210451E+41
2 √n
12724.384818136
3 √n
545.03517322022
4 √n
112.80241494815
5 √n
43.838402311876
1 , 13 , 101 , 317 , 389 , 1313 , 4121 , 5057 , 32017 , 39289 , 123313 , 416221 , 510757 , 1603069 , 12454613 , 161909969
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-161909968
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161909969 can be divided by 16 positive divisors.
The sum of these divisors (counting 161909969) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101001101000110011010001
3
Ternary
102021122212201112
4
Quaternary
21221220303101
5
Quinary
312422104334
6
Senary
24022143105
8
Octal
1151506321
10
Decimal
161909969
12
Duodecimal
46281a95
16
Hexadecimal
9a68cd1
20
Vigesimal
2abiei9
36
Base36
2oeaj5
md5
029967e4e60da4c3a6ed663693d6c510
sha1
00bcb3b04a1f280413e2d0c00a7a4cefce80fe53
sha256
9e59ee52b313008b185df717aad85d2c88bc84a48d5a21a1b351332f7138b51c
sha512
7bbe97e44590c184398828812281cef63be3bc791f370602fe0a11a5d196e15ca9394faf2de44b39d74455626486eddf4357dbd54079c24aec249406bdb12461
ripemd-160
be41d069f0f364d2605aad5d52fc8cb4302af3d0
Diameter
323819938
Circumference
1017310338.3067
Area
8.2356342669309E+16
Volume
1.7779083851388E+25
Surface area
3.2942537067724E+17
Circumference
1017310338.3067
Perimeter
647639876
Area
26214838061580961
Diagonal
228975274.04321
Surface area
157289028369485766
Volume
4.2444436178906E+24
Space diagonal
280436292.5599
Perimeter
485729907
Area
1.1351357858712E+16
Altitude
140218146.27995
Surface area
1.1351357858712E+16
Volume
5.0021247742907E+23
Height
76325091.347736