11000018 has 4 divisors (see below), whose sum is σ = 16500030. Its totient is φ = 5500008.

The previous prime is 10999997. The next prime is 11000027. The reversal of 11000018 is 81000011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81000011 = 433 ⋅187067.

It can be written as a sum of positive squares in only one way, i.e., 7912969 + 3087049 = 2813^2 + 1757^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10999972 and 11000008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750003 + ... + 2750006.

Almost surely, 2^11000018 is an apocalyptic number.

11000018 is a deficient number, since it is larger than the sum of its proper divisors (5500012).

11000018 is an equidigital number, since it uses as much as digits as its factorization.

11000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500011.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 11000018 is about 3316.6275039564. The cubic root of 11000018 is about 222.3981303649.

Adding to 11000018 its reverse (81000011), we get a palindrome (92000029).

The spelling of 11000018 in words is "eleven million, eighteen", and thus it is an aban number and an uban number.