1978889685 is an odd 10-digits composite number following 1978889684
and preceding 1978889686 . In scientific notation, it is written as 1.978889685 × 10^9.
The sum of its digits is 69. It has a total of 4 prime factors and 16 positive divisors.
There are 1026883008 positive integers (up to 1978889685) that are relatively prime to 1978889685.
1978889685 has 16 divisors, whose sum is 3251798016
The reverse of 1978889685 is 5869888791
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 69
Digital Root 6
Name
one billion nine hundred seventy-eight million eight hundred eighty-nine thousand six hundred eighty-five
Scientific notation
1.978889685 × 10^9
Engineering notation
1.978889685 × 10^9
Prime Factorization
3 × 5 × 37 × 3565567
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1978889685
Product of the distinct prime numbers
The prime factorization of 1978889685 is 3 × 5 × 37 × 3565567.
Since it has a total of 4 prime factors.
10 , 9 , 6 , 17 , 9 , 443 , 7545 , 8623 , 36501 , 39250 , 972836 , 819428 , 6265836 , 3757158 , 96120668 , 14906734 , 702828171 , 226657082 , 3462786030 , 6196125290
n×2
3957779370
n×3
5936669055
n×4
7915558740
n×5
9894448425
n÷2
989444842.5
n÷3
659629895
n÷3
494722421.25
n÷5
395777937
n2
3916004385399399225
n3
7.7493406846816E+27
n4
1.5335090346467E+37
n5
3.0346452105167E+46
2 √n
44484.712936019
3 √n
1255.4724728034
4 √n
210.91399416828
5 √n
72.324312986681
1 , 3 , 5 , 15 , 37 , 111 , 185 , 555 , 3565567 , 10696701 , 17827835 , 53483505 , 131925979 , 395777937 , 659629895 , 1978889685
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1978889684
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1978889685 can be divided by 16 positive divisors.
The sum of these divisors (counting 1978889685) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110101111100110111010111010101
3
Ternary
12002220122000022120
4
Quaternary
1311330313113111
5
Quinary
13023043432220
6
Senary
524210250153
8
Octal
16574672725
10
Decimal
1978889685
12
Duodecimal
472886959
16
Hexadecimal
75f375d5
20
Vigesimal
1ai81445
36
Base36
wq6h1x
md5
f377eea76b277d2a6471fef9bdb5a55e
sha1
8aa1ec780623c853112ac3153e9860cf6849a431
sha256
e7fb80d563d6aedb590968aa84a3053c133889fec527ceed0076a1c1ad23ba60
sha512
c96e9500f8adb450e0d706fcb6ac698a46309c4eb28e82826f33e869685c9ca8c56d895dd63f2eb39cc1bfd477210fa8243a012aa96330df232c686e19ec1a27
ripemd-160
bf160308125a19d18b32c70439cf81100e4ac585
Diameter
3957779370
Circumference
12433730593.321
Area
1.2302490608596E+19
Volume
3.2460362353547E+28
Surface area
4.9209962434385E+19
Circumference
12433730593.321
Perimeter
7915558740
Area
3916004385399399225
Diagonal
2798572630.9672
Surface area
2.3496026312396E+19
Volume
7.7493406846816E+27
Space diagonal
3427537476.994
Perimeter
5936669055
Area
1.6956796395436E+18
Altitude
1713768738.497
Surface area
1.6956796395436E+18
Volume
9.132685579772E+26
Height
932857543.65574