9118919109 has 32 divisors (see below), whose sum is σ = 13031654400. Its totient is φ = 5654638080.

The previous prime is 9118919077. The next prime is 9118919129. The reversal of 9118919109 is 9019198119.

It is a happy number.

It is not a de Polignac number, because 9118919109 - 2⁵ = 9118919077 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 (9118919129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4380949 + ... + 4383029.

It is an arithmetic number, because the mean of its divisors is an integer number (407239200).

Almost surely, 2^9118919109 is an apocalyptic number.

It is an amenable number.

9118919109 is a deficient number, since it is larger than the sum of its proper divisors (3912735291).

9118919109 is a wasteful number, since it uses less digits than its factorization.

9118919109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465.

The product of its (nonzero) digits is 52488, while the sum is 48.

The square root of 9118919109 is about 95493.0317300692. The cubic root of 9118919109 is about 2089.2053104553.

The spelling of 9118919109 in words is "nine billion, one hundred eighteen million, nine hundred nineteen thousand, one hundred nine".