161812971 is an odd 9-digits composite number following 161812970
and preceding 161812972 . In scientific notation, it is written as 1.61812971 × 10^8.
The sum of its digits is 36. It has a total of 5 prime factors and 12 positive divisors.
There are 107875152 positive integers (up to 161812971) that are relatively prime to 161812971.
161812971 has 12 divisors, whose sum is 242386872
The reverse of 161812971 is 179218161
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 36
Digital Root 9
Name
one hundred sixty-one million eight hundred twelve thousand nine hundred seventy-one
Scientific notation
1.61812971 × 10^8
Engineering notation
1.61812971 × 10^6
Prime Factorization
3 × 3 × 3 × 9 × 665897
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
17979219
Product of the distinct prime numbers
The prime factorization of 161812971 is 3 × 3 × 3 × 9 × 665897.
Since it has a total of 5 prime factors.
1 , 5 , 8 , 67 , 793 , 966 , 2571 , 8789 , 11219 , 68548 , 99534 , 441686 , 4262527 , 9526081 , 36742797 , 12203894 , 579375148 , 370411050 , 3879321041 , 5901137436
n×2
323625942
n×3
485438913
n×4
647251884
n×5
809064855
n÷2
80906485.5
n÷3
53937657
n÷3
40453242.75
n÷5
32362594.2
n2
26183437583846841
n3
4.2368198264353E+24
n4
6.855724037072E+32
n5
1.1093450747947E+41
2 √n
12720.572746539
3 √n
544.92631049251
4 √n
112.78551656369
5 √n
43.83314845787
1 , 3 , 9 , 27 , 81 , 243 , 665897 , 1997691 , 5993073 , 17979219 , 53937657 , 161812971
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-161812970
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161812971 can be divided by 12 positive divisors.
The sum of these divisors (counting 161812971) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001101001010001000111101011
3
Ternary
102021110221200000
4
Quaternary
21221101013223
5
Quinary
312411003341
6
Senary
24020114043
8
Octal
1151210753
10
Decimal
161812971
12
Duodecimal
46235923
16
Hexadecimal
9a511eb
20
Vigesimal
2ab6c8b
36
Base36
2oc7or
md5
5399cb672d16069d067ae1f688688b91
sha1
6f8f5470291a7977ed7d6b60d005d08af4a32d14
sha256
a4157b8d459dd2ffca8d275d80e6f146b12f1ec1133ee85e5e44abc1d980eeba
sha512
d5100bb7a52c97b38ac2ef873759d43998d2a7d9fee4b4d01202679cf102a8c83d65847d8350d539e9add2f296276b4db90f3a06001636e35f2bf2c2f5965184
ripemd-160
ebe4ff1cf4f085773c7ac33f68e77f9e8d3a7858
Diameter
323625942
Circumference
1016700881.8983
Area
8.225769515914E+16
Volume
1.7747149388417E+25
Surface area
3.2903078063656E+17
Circumference
1016700881.8983
Perimeter
647251884
Area
26183437583846841
Diagonal
228838098.15608
Surface area
157100625503081046
Volume
4.2368198264353E+24
Space diagonal
280268287.09567
Perimeter
485438913
Area
1.1337761053008E+16
Altitude
140134143.54783
Surface area
1.1337761053008E+16
Volume
4.9931400498967E+23
Height
76279366.052028