Search a number
-
+
18159 = 36053
BaseRepresentation
bin100011011101111
3220220120
410123233
51040114
6220023
7103641
oct43357
926816
1018159
1112709
12a613
13835b
146891
1555a9
hex46ef

18159 has 4 divisors (see below), whose sum is σ = 24216. Its totient is φ = 12104.

The previous prime is 18149. The next prime is 18169. The reversal of 18159 is 95181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95181 = 331727.

It is an interprime number because it is at equal distance from previous prime (18149) and next prime (18169).

It is a cyclic number.

It is not a de Polignac number, because 18159 - 24 = 18143 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3024 + ... + 3029.

It is an arithmetic number, because the mean of its divisors is an integer number (6054).

218159 is an apocalyptic number.

18159 is a deficient number, since it is larger than the sum of its proper divisors (6057).

18159 is an equidigital number, since it uses as much as digits as its factorization.

18159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056.

The product of its digits is 360, while the sum is 24.

The square root of 18159 is about 134.7553338462. The cubic root of 18159 is about 26.2843541132.

The spelling of 18159 in words is "eighteen thousand, one hundred fifty-nine".

Divisors: 1 3 6053 18159