11156109 has 8 divisors (see below), whose sum is σ = 14902272. Its totient is φ = 7423680.

The previous prime is 11156099. The next prime is 11156111. The reversal of 11156109 is 90165111.

11156109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11156109 - 2⁹ = 11155597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1357 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (1862784).

Almost surely, 2^11156109 is an apocalyptic number.

It is an amenable number.

11156109 is a deficient number, since it is larger than the sum of its proper divisors (3746163).

11156109 is an equidigital number, since it uses as much as digits as its factorization.

11156109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867.

The product of its (nonzero) digits is 270, while the sum is 24.

The square root of 11156109 is about 3340.0761967356. The cubic root of 11156109 is about 223.4451416592.

The spelling of 11156109 in words is "eleven million, one hundred fifty-six thousand, one hundred nine".