161609985 (number)

161609985 is an odd 9-digits composite number following 161609984 and preceding 161609986. In scientific notation, it is written as 1.61609985 × 10^8. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 84554496 positive integers (up to 161609985) that are relatively prime to 161609985.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million six hundred nine thousand nine hundred eighty-five

Notation

Scientific notation 1.61609985 × 10^8
Engineering notation 1.61609985 × 10^6

Prime Factorization of 161609985

Prime Factorization 2385 × 9 × 7529

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161609985
Product of the distinct prime numbers

The prime factorization of 161609985 is 2385 × 9 × 7529. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 4, 21, 38, 970, 643, 525, 3304, 88684, 10633, 602082, 305030, 9454306, 3367200, 2481194, 69309817, 553244064, 32792806, 3862787796, 8136238240

Basic calculations (n = 161609985)

Multiplication

n×y
n×2 323219970
n×3 484829955
n×4 646439940
n×5 808049925

Division

n÷y
n÷2 80804992.5
n÷3 53869995
n÷3 40402496.25
n÷5 32321997

Exponentiation

ny
n2 26117787251700225
n3 4.2208952059805E+24
n4 6.8213881092507E+32
n5 1.1024044300152E+41

Nth Root

y√n
2√n 12712.59159259
3√n 544.6983545255
4√n 112.75012901363
5√n 43.822145652136

Divisors of 161609985

1, 9, 2385, 7529, 21465, 67761, 17956665, 161609985

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 -161609984
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 161609985 can be divided by 8 positive divisors. The sum of these divisors (counting 161609985) is 1, the average is 0.125.

Base conversion 161609985

Base System Value
2 Binary 1001101000011111100100000001
3 Ternary 102021002122020000
4 Quaternary 21220133210001
5 Quinary 312333004420
6 Senary 24011510213
8 Octal 1150374401
10 Decimal 161609985
12 Duodecimal 46158369
16 Hexadecimal 9a1f901
20 Vigesimal 2aa14j5
36 Base36 2o7v29

Cryptographic Hash Functions

md5 d7bb4761531e357c26d629b11d16acf3
sha1 16b7f584dee55520c5544a7e83eb0c810f9e5a77
sha256 ea1ac6b51a610bcb41a6f204b13fb8213dc102a5d9cae67da4b6505d071327c1
sha512 45da9e180e4c214b844a478ea605b3cae9eaa34b0b68800600b42c062adc5334bfe548d63216ffdede69582049a7886c01be89e3793b3d1e9ff67014c7533b7e
ripemd-160 51227a90d5c8432bf62a861cff09e9c44b838e4c

161609985 as geometric shapes

Circle

Radius = n
Diameter 323219970
Circumference 1015425483.2455
Area 8.2051448557963E+16

Sphere

Radius = n
Volume 1.7680444494241E+25
Surface area 3.2820579423185E+17
Circumference 1015425483.2455

Square

Length = n
Perimeter 646439940
Area 26117787251700225
Diagonal 228551032.60191

Cube

Length = n
Surface area 156706723510201350
Volume 4.2208952059805E+24
Space diagonal 279916705.03044

Equilateral Triangle

Length = n
Perimeter 484829955
Area 1.1309333625305E+16
Altitude 139958352.51522

Triangular Pyramid

Length = n
Surface area 1.1309333625305E+16
Volume 4.974372704711E+23
Height 76183677.533971