11580018 has 16 divisors (see below), whose sum is σ = 23290176. Its totient is φ = 3838320.

The previous prime is 11580013. The next prime is 11580031. The reversal of 11580018 is 81008511.

It is a self number, because there is not a number n which added to its sum of digits gives 11580018.

It is not an unprimeable number, because it can be changed into a prime (11580011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4246 + ... + 6417.

It is an arithmetic number, because the mean of its divisors is an integer number (1455636).

Almost surely, 2^11580018 is an apocalyptic number.

11580018 is an abundant number, since it is smaller than the sum of its proper divisors (11710158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11580018 is a wasteful number, since it uses less digits than its factorization.

11580018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10849.

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

The square root of 11580018 is about 3402.9425502056. The cubic root of 11580018 is about 226.2401837362.

Adding to 11580018 its reverse (81008511), we get a palindrome (92588529).

The spelling of 11580018 in words is "eleven million, five hundred eighty thousand, eighteen".