Properties of the Number 1694

One Thousand Six Hundred Ninety-Four

Basics

Value: 1693 → 1694 → 1695

Parity: even

Prime: No

Previous Prime: 1693

Next Prime: 1697

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 11 ²

Divisors: 1, 2, 7, 11, 14, 22, 77, 121, 154, 242

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11010011110

Octal: 3236

Duodecimal: B92

Hexadecimal: 69e

Square: 2869636

Square Root: 41.15823125451335

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 unimodular 2 X 2 matrices having all terms in {0,1,...,n}. A210000

E.g.f. satisfies: A(x) = 1 - log(1 - x·A(x)). A138013

Numbers n such that Bernoulli number B_n has denominator 138. A271635

a(n) = 14·n². A144555

Numbers m such that there are precisely 10 groups of order m. A249553

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7. A252574

Number of unimodal compositions of n+2 where the maximal part appears exactly twice. A114921

Concentric 14-gonal numbers. A195145

Alternately constant partitions. Number of integer partitions y of n such that y_i = y_i+1 for all odd i. A351004

Numbers k such that σ(x) = k has exactly 3 solutions. A7372