18058 has 4 divisors (see below), whose sum is σ = 27090. Its totient is φ = 9028.

The previous prime is 18049. The next prime is 18059. The reversal of 18058 is 85081.

18058 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9409 + 8649 = 97^2 + 93^2 .

It is a super-3 number, since 3×18058³ = 17665673553336, which contains 333 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (18059) by changing a digit.

18058 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4513 + ... + 4516.

2¹⁸⁰⁵⁸ is an apocalyptic number.

18058 is a deficient number, since it is larger than the sum of its proper divisors (9032).

18058 is an equidigital number, since it uses as much as digits as its factorization.

18058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 18058 is about 134.3800580443. The cubic root of 18058 is about 26.2355324662.

It can be divided in two parts, 180 and 58, that multiplied together give a triangular number (10440 = T₁₄₄).

The spelling of 18058 in words is "eighteen thousand, fifty-eight".