Properties of the Number 19049

Nineteen Thousand Forty-Nine

Basics

Value: 19048 → 19049 → 19050

Parity: odd

Prime: No

Previous Prime: 19037

Next Prime: 19051

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 43 × 443

Divisors: 1, 43, 443, 19049

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101001101001

Octal: 45151

Duodecimal: B035

Hexadecimal: 4a69

Square: 362864401

Square Root: 138.01811475310043

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

Numbers whose Matula tree is a binary tree (i.e., root has degree 2 and all nodes except root and leaves have degree 3). A111299

Composite and every divisor (except 1) contains the digit 4. A62670

Matula-Goebel numbers of rooted trees in which all positive outdegrees are the same. A298424

Triangle read by rows: row n>=1 contains in increasing order the Matula numbers of the rooted binary trees with n leaves. A245824

Matula-Goebel numbers of unlabeled binary rooted semi-identity trees. A339193

Distinct values of A218787 in the order of appearance. A218609

a(n) = n*(21·n-17)/2. A226491

Number of nX2 0..1 arrays with every element unequal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero. A304143

a(n) = 1 + 2·least i such that A103507(i)=n+1, 0 if no such i exists. A103508

Composite numbers whose prime factors contain no digits other than 3 and 4. A36314