11185011189 has 36 divisors (see below), whose sum is σ = 18370797900. Its totient is φ = 6545024640.

The previous prime is 11185011157. The next prime is 11185011197. The reversal of 11185011189 is 98111058111.

It can be written as a sum of positive squares in 2 ways, for example, as 9483448689 + 1701562500 = 97383^2 + 41250^2 .

It is not a de Polignac number, because 11185011189 - 2⁵ = 11185011157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11185011139) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 145504 + ... + 208665.

Almost surely, 2^11185011189 is an apocalyptic number.

It is an amenable number.

11185011189 is a deficient number, since it is larger than the sum of its proper divisors (7185786711).

11185011189 is a wasteful number, since it uses less digits than its factorization.

11185011189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354226 (or 354212 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 36.

The spelling of 11185011189 in words is "eleven billion, one hundred eighty-five million, eleven thousand, one hundred eighty-nine".