Properties of the Number 18869

Eighteen Thousand Eight Hundred Sixty-Nine

Basics

Value: 18868 → 18869 → 18870

Parity: odd

Prime: Yes

Previous Prime: 18859

Next Prime: 18899

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 18869

Divisors: 1, 18869

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100110110101

Octal: 44665

Duodecimal: AB05

Hexadecimal: 49b5

Square: 356039161

Square Root: 137.3644786689776

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

Irregular primes with irregularity index three. A60975

Primes p such that q-p = 30, where q is the next prime after p. A124596

Father primes of order 8. A136077

Smallest prime p of two consecutive primes, p < q, such that gcd(p+1, q+1) = 2n. A67604

Primes with digit sum = 32. A106768

Number of partitions of n having standard deviation σ <= 2. A238659

Number of intersection points when every pair of vertices of a row of n adjacent congruent rectangles are joined by an infinite line. A347750

Primes associated with groups in A076077. A76076

Consider all integer triples (i,j,k), j,k>0, with i³=j³+binomial(k+2,3), ordered by increasing i; sequence gives i values. A54234

Primes p = prime(i) such that p(i)# - p(i+1) is prime. A93078