11161911 has 16 divisors (see below), whose sum is σ = 16588800. Its totient is φ = 6634368.

The previous prime is 11161907. The next prime is 11161921. The reversal of 11161911 is 11916111.

11161911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11161911 - 2² = 11161907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11161921) 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, 4791 + ... + 6728.

It is an arithmetic number, because the mean of its divisors is an integer number (1036800).

Almost surely, 2^11161911 is an apocalyptic number.

11161911 is a deficient number, since it is larger than the sum of its proper divisors (5426889).

11161911 is a wasteful number, since it uses less digits than its factorization.

11161911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11558.

The product of its digits is 54, while the sum is 21.

The square root of 11161911 is about 3340.9446268982. The cubic root of 11161911 is about 223.4838709339.

The spelling of 11161911 in words is "eleven million, one hundred sixty-one thousand, nine hundred eleven".