18290 has 16 divisors (see below), whose sum is σ = 34560. Its totient is φ = 6960.

The previous prime is 18289. The next prime is 18301. The reversal of 18290 is 9281.

18290 is nontrivially palindromic in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (2160).

2¹⁸²⁹⁰ is an apocalyptic number.

18290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18290 is a deficient number, since it is larger than the sum of its proper divisors (16270).

18290 is a wasteful number, since it uses less digits than its factorization.

18290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 18290 is about 135.2405264704. The cubic root of 18290 is about 26.3474083100.

Subtracting from 18290 its reverse (9281), we obtain a palindrome (9009).

It can be divided in two parts, 182 and 90, that added together give a palindrome (272).

The spelling of 18290 in words is "eighteen thousand, two hundred ninety".