161001985 (number)

161001985 is an odd 9-digits composite number following 161001984 and preceding 161001986. In scientific notation, it is written as 1.61001985 × 10^8. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 117946368 positive integers (up to 161001985) that are relatively prime to 161001985.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.61001985 × 10^8
Engineering notation 1.61001985 × 10^6

Prime Factorization of 161001985

Prime Factorization 5 × 17 × 37 × 51193

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 161001985
Product of the distinct prime numbers

The prime factorization of 161001985 is 5 × 17 × 37 × 51193. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 16, 55, 726, 512, 1279, 1861, 92324, 64748, 895462, 428083, 8682024, 1364509, 60861025, 25573110, 701002925, 281480258, 3167214920, 7296858088

Basic calculations (n = 161001985)

Multiplication

n×y
n×2 322003970
n×3 483005955
n×4 644007940
n×5 805009925

Division

n÷y
n÷2 80500992.5
n÷3 53667328.333333
n÷3 40250496.25
n÷5 32200397

Exponentiation

ny
n2 25921639173940225
n3 4.1734353614581E+24
n4 6.7193137746395E+32
n5 1.0818228555548E+41

Nth Root

y√n
2√n 12688.655760166
3√n 544.01441827594
4√n 112.64393352581
5√n 43.789122877558

Divisors of 161001985

1, 5, 17, 37, 85, 185, 629, 3145, 51193, 255965, 870281, 1894141, 4351405, 9470705, 32200397, 161001985

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 -161001984
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 161001985 can be divided by 16 positive divisors. The sum of these divisors (counting 161001985) is 1, the average is 0.0625.

Base conversion 161001985

Base System Value
2 Binary 1001100110001011001000000001
3 Ternary 102012221202012111
4 Quaternary 21212023020001
5 Quinary 312204030420
6 Senary 23550455321
8 Octal 1146131001
10 Decimal 161001985
12 Duodecimal 45b04541
16 Hexadecimal 998b201
20 Vigesimal 2a654j5
36 Base36 2nutxd

Cryptographic Hash Functions

md5 897eef55bbc1814ae3c5d28960843735
sha1 3ffa5b482a34dab5a13bad3fea83d38af257711e
sha256 941bdce0293bbaa402465c77947c40616e34bf7f4cc60bd57d3f796bbc2c9315
sha512 4021ddf93bc5666610a16769ebd2ff9b4cc4f01db22cddabd4a1de25498d0601eb9a08433af7b9f719164f8494da0dd1a03d485c764d8f32a548b5aa2aabe626
ripemd-160 0b67dea97bcb2f56607df56919cba81622307d90

161001985 as geometric shapes

Circle

Radius = n
Diameter 322003970
Circumference 1011605306.5787
Area 8.1435231197856E+16

Sphere

Radius = n
Volume 1.7481645162385E+25
Surface area 3.2574092479142E+17
Circumference 1011605306.5787

Square

Length = n
Perimeter 644007940
Area 25921639173940225
Diagonal 227691190.75599

Cube

Length = n
Surface area 155529835043641350
Volume 4.1734353614581E+24
Space diagonal 278863618.13944

Equilateral Triangle

Length = n
Perimeter 483005955
Area 1.1224399016183E+16
Altitude 139431809.06972

Triangular Pyramid

Length = n
Surface area 1.1224399016183E+16
Volume 4.9184407415513E+23
Height 75897063.58533