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Properties of the Number 18843

Eighteen Thousand Eight Hundred Forty-Three

Basics

Value: 18842 → 18843 → 18844

Parity: odd

Prime: No

Previous Prime: 18839

Next Prime: 18859

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 11 × 571

Divisors: 1, 3, 11, 33, 571, 1713, 6281, 18843

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100100110011011

Octal: 44633

Duodecimal: AAA3

Hexadecimal: 499b

Square: 355058649

Square Root: 137.26980731391737

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

Triangle read by rows: T(n,k) is the number of weakly connected acyclic digraphs on n unlabeled nodes with k arcs, n >= 1, k = 0..(n-1)*n/2. A350449
Number of partitions p of n such that (number of even numbers in p) <= (number of odd numbers in p). A241637
a(n) = 1331·n - 1122. A157441
Smallest sets of 6 consecutive deficient numbers in arithmetic progression. The initial deficient number is listed. A231628
Values of A038005 ending in 3. A38013
Exponent of least power of 2 having exactly n consecutive 3's in its decimal representation. A131537
Numbers in A231626 but not in A343302; first of 5 consecutive deficient numbers in arithmetic progression with common difference > 1. A343303
Define the sequence S(a0,a1) by an+2 is the least integer such that an+2/an+1>an+1/an for n >= 0. This is S(3,6). A18909
Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1s. A296553
Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0001 pattern in any orientation. A146661