Properties of the Number 19146

Nineteen Thousand One Hundred Forty-Six

Basics

Value: 19145 → 19146 → 19147

Parity: even

Prime: No

Previous Prime: 19141

Next Prime: 19157

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 3191

Divisors: 1, 2, 3, 6, 3191, 6382, 9573, 19146

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101011001010

Octal: 45312

Duodecimal: B0B6

Hexadecimal: 4aca

Square: 366569316

Square Root: 138.36907168872673

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

Positive integers m such that π(m³) = π(j³) + π(k³) for some 0 < j <= k < m. A262409

T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order. A227263

a(n) = ∑_k=1..n-1 gcd(k,n)*a(k), a(1) = 1. A72979

a(n) = min{ m : ∑_{n <= i <= m} 1/p_i > 1}, where p_i is the i-th prime = A000040(i). A92325

Sum of prime anti-divisors of n = sum of prime anti-divisors of n+1 with n > 1. A192283

Number of nX3 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X4 binary array having a sum of two or less, with rows and columns of the latter in lexicographically nondecreasing order. A227260

Growth series for affine Coxeter group B₅. A267168

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 181", based on the 5-celled von Neumann neighborhood. A270628

Composite numbers, not ending with 0, sharing a 3-digit sequence with some of its prime factors. A131523

Numbers k such that (101·10^k + 1)/3 is prime. A275978