1118209105 has 16 divisors (see below), whose sum is σ = 1472340240. Its totient is φ = 810171648.

The previous prime is 1118209087. The next prime is 1118209111. The reversal of 1118209105 is 5019028111.

It can be written as a sum of positive squares in 8 ways, for example, as 1580049 + 1116629056 = 1257^2 + 33416^2 .

It is not a de Polignac number, because 1118209105 - 2⁷ = 1118208977 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 158850 + ... + 165739.

It is an arithmetic number, because the mean of its divisors is an integer number (92021265).

Almost surely, 2^1118209105 is an apocalyptic number.

It is an amenable number.

1118209105 is a deficient number, since it is larger than the sum of its proper divisors (354131135).

1118209105 is a wasteful number, since it uses less digits than its factorization.

1118209105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324660.

The product of its (nonzero) digits is 720, while the sum is 28.

The square root of 1118209105 is about 33439.6337450038. The cubic root of 1118209105 is about 1037.9450005694.

The spelling of 1118209105 in words is "one billion, one hundred eighteen million, two hundred nine thousand, one hundred five".