18526 has 8 divisors (see below), whose sum is σ = 28440. Its totient is φ = 9048.

The previous prime is 18523. The next prime is 18539. The reversal of 18526 is 62581.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18497 and 18506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40 + ... + 196.

It is an arithmetic number, because the mean of its divisors is an integer number (3555).

2¹⁸⁵²⁶ is an apocalyptic number.

18526 is a deficient number, since it is larger than the sum of its proper divisors (9914).

18526 is a wasteful number, since it uses less digits than its factorization.

18526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its digits is 480, while the sum is 22.

The square root of 18526 is about 136.1102494304. The cubic root of 18526 is about 26.4602465533.

The spelling of 18526 in words is "eighteen thousand, five hundred twenty-six".