11018009 has 4 divisors (see below), whose sum is σ = 11029200. Its totient is φ = 11006820.

The previous prime is 11017973. The next prime is 11018027. The reversal of 11018009 is 90081011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11018009 - 2¹² = 11013913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11018089) 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 3 ways as a sum of consecutive naturals, for example, 3959 + ... + 6140.

It is an arithmetic number, because the mean of its divisors is an integer number (2757300).

Almost surely, 2^11018009 is an apocalyptic number.

It is an amenable number.

11018009 is a deficient number, since it is larger than the sum of its proper divisors (11191).

11018009 is a wasteful number, since it uses less digits than its factorization.

11018009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11190.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 11018009 is about 3319.3386389460. The cubic root of 11018009 is about 222.5193115419.

The spelling of 11018009 in words is "eleven million, eighteen thousand, nine".