161866561 is an odd 9-digits prime number following 161866560
and preceding 161866562 . In scientific notation, it is written as 1.61866561 × 10^8.
The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors.
There are 161866560 positive integers (up to 161866561) that are relatively prime to 161866561.
161866561 has 2 divisors, whose sum is 161866562
The reverse of 161866561 is 165668161
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 9
Sum of Digits 40
Digital Root 4
Name
one hundred sixty-one million eight hundred sixty-six thousand five hundred sixty-one
Scientific notation
1.61866561 × 10^8
Engineering notation
1.61866561 × 10^6
Prime Factorization
161866561
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
161866561
Product of the distinct prime numbers
The prime factorization of 161866561 is 161866561.
Since it has a total of 1 prime factors.
1 , 10 , 13 , 43 , 681 , 939 , 1404 , 8706 , 95778 , 10493 , 528637 , 648551 , 279004 , 1638891 , 78332995 , 96630535 , 102949510 , 408970686 , 4424743546 , 4840633032
n×2
323733122
n×3
485599683
n×4
647466244
n×5
809332805
n÷2
80933280.5
n÷3
53955520.333333
n÷3
40466640.25
n÷5
32373312.2
n2
26200783569966721
n3
4.2410307319758E+24
n4
6.8648105968024E+32
n5
1.1111832832208E+41
2 √n
12722.679002474
3 √n
544.98646096041
4 √n
112.79485361697
5 √n
43.836051448019
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
161866562
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
80933281
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
12722.679041774
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999876441
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161866561 can be divided by 2 positive divisors.
The sum of these divisors (counting 161866561) is 161866562, the average is 80933281.
Base
System
Value
2
Binary
1001101001011110001101000001
3
Ternary
102021120200011211
4
Quaternary
21221132031001
5
Quinary
312414212221
6
Senary
24021210121
8
Octal
1151361501
10
Decimal
161866561
12
Duodecimal
46260941
16
Hexadecimal
9a5e341
20
Vigesimal
2abd681
36
Base36
2odd1d
md5
ddc9cc2973adee02ff75a1f33be7aefb
sha1
b0f13f7eeb268c0e3cdeb3e3b093df7fc0f431b6
sha256
c6d7c8654d763ac5c313f6be4bebba1fad8cdd6050d36d1c1f44e9848ba70803
sha512
a9bdf896227eb1fbffac448554347b601a26274b53f5166718833e8f7739c49d585f8819bcc23e4c65479f4ba76c6b0133697485bf61f7b542abfab9af04683c
ripemd-160
d6aec1d7d8b033be0a5ad814f6554e7a893f946a
Diameter
323733122
Circumference
1017037597.7989
Area
8.2312189181704E+16
Volume
1.7764787988298E+25
Surface area
3.2924875672681E+17
Circumference
1017037597.7989
Perimeter
647466244
Area
26200783569966721
Diagonal
228913885.86089
Surface area
157204701419800326
Volume
4.2410307319758E+24
Space diagonal
280361107.69845
Perimeter
485599683
Area
1.1345272085325E+16
Altitude
140180553.84922
Surface area
1.1345272085325E+16
Volume
4.9981026496677E+23
Height
76304628.620297