1981946985 is an odd 10-digits composite number following 1981946984
and preceding 1981946986 . In scientific notation, it is written as 1.981946985 × 10^9.
The sum of its digits is 60. It has a total of 3 prime factors and 8 positive divisors.
There are 1057038384 positive integers (up to 1981946985) that are relatively prime to 1981946985.
1981946985 has 8 divisors, whose sum is 3171115200
The reverse of 1981946985 is 5896491891
Previous prime number is 3
Is Prime? no Number parity odd Number length 10 Sum of Digits 60 Digital Root 6
Name
one billion nine hundred eighty-one million nine hundred forty-six thousand nine hundred eighty-five
Scientific notation
1.981946985 × 10^9
Engineering notation
1.981946985 × 10^9
Prime Factorization
5 × 3 × 132129799
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1981946985 Product of the distinct prime numbers
The prime factorization of 1981946985 is 5 × 3 × 132129799.
Since it has a total of 3 prime factors.
10 , 5 , 82 , 34 , 416 , 768 , 9956 , 5020 , 20238 , 14026 , 368231 , 627367 , 8056064 , 8803622 , 36774796 , 86992369 , 29400806 , 941738998 , 9056336574 , 5896489731
n×2
3963893970
n×3
5945840955
n×4
7927787940
n×5
9909734925
n÷2
990973492.5
n÷3
660648995
n÷3
495486746.25
n÷5
396389397
n2
3928113851350590225
n3
7.785313404421E+27
n4
1.5430078429172E+37
n5
3.0581597421012E+46
2 √n44519.063163998
3 √n1256.1186905649
4 √n210.99541029131
5 √n72.346646783628
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1981946984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1981946985 can be divided by 8 positive divisors.
The sum of these divisors (counting 1981946985) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110001000100001110001101001
3
Ternary
12010010101100010220
4
Quaternary
1312020201301221
5
Quinary
13024334300420
6
Senary
524400000253
8
Octal
16610416151
10
Decimal
1981946985
12
Duodecimal
473900089
16
Hexadecimal
76221c69
20
Vigesimal
1aj73795
36
Base36
ws002x
md5
47fcf668ff2e4924f5508d391919bbc3
sha1
26b37a8fe5185364e2f3587a247cd758d6d7565d
sha256
7d8dc6cd7a4ad32ed9b157f4ad67e24c60c4f65b43808aab273c399885ac1676
sha512
9ccb93e01575c561acbf47d6c1887b88cdeb7a7d6ecbbc568c422721d204497c6c36d0209cab5d4713dc65197433bc6a3f339a9e1f890569b1867bfebd48822f
ripemd-160
e75f2c7f76bafe5a8832bdcad7f1855e2e487221
Diameter
3963893970
Circumference
12452940175.761
Area
1.2340533617867E+19
Volume
3.2611044529631E+28
Surface area
4.9362134471469E+19
Circumference
12452940175.761
Perimeter
7927787940
Area
3928113851350590225
Diagonal
2802896306.0915
Surface area
2.3568683108104E+19
Volume
7.785313404421E+27
Space diagonal
3432832875.928
Perimeter
5945840955
Area
1.7009231921136E+18
Altitude
1716416437.964
Surface area
1.7009231921136E+18
Volume
9.1750798365477E+26
Height
934298768.69716