18058011 has 16 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 11642048.

The previous prime is 18057997. The next prime is 18058021. The reversal of 18058011 is 11085081.

It is a cyclic number.

It is not a de Polignac number, because 18058011 - 2²¹ = 15960859 is a prime.

It is a super-2 number, since 2×18058011² = 652183522552242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18058021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11830 + ... + 13268.

It is an arithmetic number, because the mean of its divisors is an integer number (1555200).

Almost surely, 2^18058011 is an apocalyptic number.

18058011 is a deficient number, since it is larger than the sum of its proper divisors (6825189).

18058011 is a wasteful number, since it uses less digits than its factorization.

18058011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 18058011 is about 4249.4718495361. The cubic root of 18058011 is about 262.3553779327.

The spelling of 18058011 in words is "eighteen million, fifty-eight thousand, eleven".