8109119805 has 16 divisors (see below), whose sum is σ = 13157334144. Its totient is φ = 4263949760.

The previous prime is 8109119791. The next prime is 8109119929. The reversal of 8109119805 is 5089119018.

It is not a de Polignac number, because 8109119805 - 2⁶ = 8109119741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3806034 + ... + 3808163.

It is an arithmetic number, because the mean of its divisors is an integer number (822333384).

Almost surely, 2^8109119805 is an apocalyptic number.

It is an amenable number.

8109119805 is a deficient number, since it is larger than the sum of its proper divisors (5048214339).

8109119805 is a wasteful number, since it uses less digits than its factorization.

8109119805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7614276.

The product of its (nonzero) digits is 25920, while the sum is 42.

The square root of 8109119805 is about 90050.6513302375. The cubic root of 8109119805 is about 2009.0522833515.

The spelling of 8109119805 in words is "eight billion, one hundred nine million, one hundred nineteen thousand, eight hundred five".