Properties of the Number 1790

One Thousand Seven Hundred Ninety

Basics

Value: 1789 → 1790 → 1791

Parity: even

Prime: No

Previous Prime: 1789

Next Prime: 1801

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 179

Divisors: 1, 2, 5, 10, 179, 358, 895, 1790

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11011111110

Octal: 3376

Duodecimal: 1052

Hexadecimal: 6fe

Square: 3204100

Square Root: 42.30839160261236

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 partitions of n into pairwise relatively prime parts. A51424

Triangle T(n, k, m) = (m*(n-k) + 1)*T(n-1, k-1, m) + (m·k + 1)*T(n-1, k, m) + m·k*(n-k)*T(n-2, k-1, m) with T(n, 0, m) = T(n, n, m) = 1 and m = 4, read by rows. A157150

a(1)=1, for n>1, a(n) is the least number > a(n-1) such that the Hamming distance D(a(n-1), a(n)) = 2. A206853

Numbers with exactly 9 ones in binary expansion. A23691

Number of toothpicks after n-th stage in the I-toothpick structure of A139250. A160164

Numbers k whose largest divisor <= sqrt(k) equals 10. A162530

a(n) = ∑_k=0..n A026615(n, k). A26622

Numbers k such that 3^k + 14 is prime. A219035

Triangular array T read by rows (4-diamondization of Pascal's triangle). Step 1: t(n,k) = C(n+2,k+1) + C(n+1,k) + C(n+1,k+1) + C(n,k). Step 2: T(n,k) = t(n,k) - t(0,0) + 1. Domain: 0 <= k <= n, n >= 0. A27170

a() = 1,3,... [ A037257 ], differences = 2,... [ A037258 ] and 2nd differences [ A037259 ] are disjoint and monotonic; adjoin next free number to 2nd differences unless it would produce a duplicate in which case ignore. A37257