Properties of the Number 18849

Eighteen Thousand Eight Hundred Forty-Nine

Basics

Value: 18848 → 18849 → 18850

Parity: odd

Prime: No

Previous Prime: 18839

Next Prime: 18859

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 61 × 103

Divisors: 1, 3, 61, 103, 183, 309, 6283, 18849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100110100001

Octal: 44641

Duodecimal: AAA9

Hexadecimal: 49a1

Square: 355284801

Square Root: 137.29166034395533

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of compositions (ordered partitions) of n into distinct parts >= 6. A339104

a(n) = 144·n² - 161·n + 45. A156711

Diagonal sums of number triangle A172380. A172382

Odd composite integers m such that U(m)² == 1 (mod m) and V(m) == 6 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=6 and b=-1, respectively. A337629

Triangle read by rows, T(n,k) = ∑_j=0..n (-1)^n-j*C(-j-1,-n-1)*S2(k,j), S2 the Stirling set numbers A048993, for n>=0 and 0<=k<=n. A271702

Isolated deficient numbers that are divisible by 3. A273255

Number of compositions (ordered partitions) of n into distinct nonprime parts. A331917

Odd composite integers m such that A085447(m) == 6 (mod m). A338078

a(n) = [ 2nd elementary symmetric function of {sqrt(k+1)} ], k = 1,2,...,n. A25219

Number of tilings of an 8 X n rectangle using integer-sided square tiles. A219927