2018867981 is an odd 10-digits composite number following 2018867980
and preceding 2018867982 . In scientific notation, it is written as 2.018867981 × 10^9.
The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors.
There are 1863570432 positive integers (up to 2018867981) that are relatively prime to 2018867981.
2018867981 has 4 divisors, whose sum is 2174165532
The reverse of 2018867981 is 1897688102
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 50
Digital Root 5
Name
two billion eighteen million eight hundred sixty-seven thousand nine hundred eighty-one
Scientific notation
2.018867981 × 10^9
Engineering notation
2.018867981 × 10^9
Prime Factorization
13 × 155297537
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2018867981
Product of the distinct prime numbers
The prime factorization of 2018867981 is 13 × 155297537.
Since it has a total of 2 prime factors.
7 , 7 , 28 , 64 , 242 , 871 , 5770 , 5077 , 42530 , 81557 , 98746 , 779495 , 4686427 , 4079266 , 19875330 , 86310839 , 181634489 , 621796702 , 8517110846 , 8818893739
n×2
4037735962
n×3
6056603943
n×4
8075471924
n×5
10094339905
n÷2
1009433990.5
n÷3
672955993.66667
n÷3
504716995.25
n÷5
403773596.2
n2
4075827924707016361
n3
8.2285584932567E+27
n4
1.6612373271822E+37
n5
3.3538188486901E+46
2 √n
44931.814797535
3 √n
1263.8706832817
4 √n
211.97125936677
5 √n
72.61420451472
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2018867980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2018867981 can be divided by 4 positive divisors.
The sum of these divisors (counting 2018867981) is 1, the average is 0.25.
Base
System
Value
2
Binary
1111000010101010111101100001101
3
Ternary
12012200212010020012
4
Quaternary
1320111113230031
5
Quinary
13113312233411
6
Senary
532155203005
8
Octal
17025275415
10
Decimal
2018867981
12
Duodecimal
484146465
16
Hexadecimal
78557b0d
20
Vigesimal
1bahi9j1
36
Base36
xdzci5
md5
72d600674f2bdac3055e3cd6e6a92bbf
sha1
883422187232d923c21002abb34f49f6dcfad633
sha256
dac6916cf1ee615e3ccef44e9a429b6a8f9dcbef37ba7297fc05f4e1f2f49ab9
sha512
e02aacf8de7b25775c1985806c4a7af6d04df13cfe2054e8a086cfcc2c1d67607d4cbe76503b30ccddce215716d20323322cdd6621200d5fc236feeda0bce295
ripemd-160
64e8f54842a1a36c65df86626cb18e05d54536b0
Diameter
4037735962
Circumference
12684921635.355
Area
1.2804591065556E+19
Volume
3.4467705216065E+28
Surface area
5.1218364262223E+19
Circumference
12684921635.355
Perimeter
8075471924
Area
4075827924707016361
Diagonal
2855110479.371
Surface area
2.4454967548242E+19
Volume
8.2285584932567E+27
Space diagonal
3496781916.866
Perimeter
6056603943
Area
1.7648852621251E+18
Altitude
1748390958.433
Surface area
1.7648852621251E+18
Volume
9.6974491832866E+26
Height
951703493.12366