1388571981 is an odd 10-digits composite number following 1388571980
and preceding 1388571982 . In scientific notation, it is written as 1.388571981 × 10^9.
The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors.
There are 925601712 positive integers (up to 1388571981) that are relatively prime to 1388571981.
1388571981 has 8 divisors, whose sum is 1851655200
The reverse of 1388571981 is 1891758831
Previous prime number is 9949
Is Prime? no Number parity odd Number length 10 Sum of Digits 51 Digital Root 6
Name
one billion three hundred eighty-eight million five hundred seventy-one thousand nine hundred eighty-one
Scientific notation
1.388571981 × 10^9
Engineering notation
1.388571981 × 10^9
Prime Factorization
3 × 9949 × 46523
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1388571981 Product of the distinct prime numbers
The prime factorization of 1388571981 is 3 × 9949 × 46523.
Since it has a total of 3 prime factors.
3 , 7 , 5 , 69 , 578 , 993 , 7752 , 4735 , 97067 , 6319 , 177640 , 463985 , 399330 , 1074281 , 27428035 , 11470825 , 302077891 , 418041527 , 8423258817 , 2580361705
n×2
2777143962
n×3
4165715943
n×4
5554287924
n×5
6942859905
n÷2
694285990.5
n÷3
462857327
n÷3
347142995.25
n÷5
277714396.2
n2
1928132146418264361
n3
2.6773502741818E+27
n4
3.7176935740515E+36
n5
5.1622851308717E+45
2 √n37263.547616941
3 √n1115.636717582
4 √n193.03768444773
5 √n67.377311784479
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
-1388571980 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 1388571981 can be divided by 8 positive divisors.
The sum of these divisors (counting 1388571981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010110000111110110101001101
3
Ternary
10120202211202122220
4
Quaternary
1102300332311031
5
Quinary
10320433300411
6
Senary
345441525553
8
Octal
12260766515
10
Decimal
1388571981
12
Duodecimal
3290438b9
16
Hexadecimal
52c3ed4d
20
Vigesimal
11dib9j1
36
Base36
mypwzx
md5
b08e58aeef4bdae85039d855bb2fecd3
sha1
a90203a7d2ba55d31d0a158cb2ad976933aeadd6
sha256
c14575f6596af407ba5c3e3a5a73b534f94018b3d2c0ff0231153982dc7c34ae
sha512
d04d5e370bdc365294e9b312074ebf8fed594713a0f4a79f0ef4bfd3d6025538c8edb9841cdd5bc041b78f12728a8f52408e4143614c9f8b6d8523ee41bdf750
ripemd-160
0c8f41a8c965a6c469e1470ab664ed9f88e500ec
Diameter
2777143962
Circumference
8724655068.9805
Area
6.0574057863379E+18
Volume
1.1214858603275E+28
Surface area
2.4229623145352E+19
Circumference
8724655068.9805
Perimeter
5554287924
Area
1928132146418264361
Diagonal
1963737327.8615
Surface area
1.156879287851E+19
Volume
2.6773502741818E+27
Space diagonal
2405077221.0586
Perimeter
4165715943
Area
8.3490571032582E+17
Altitude
1202538610.5293
Surface area
8.3490571032582E+17
Volume
3.155287557476E+26
Height
654579109.28716