8118431109 has 48 divisors (see below), whose sum is σ = 12249619200. Its totient is φ = 5176579968.

The previous prime is 8118431059. The next prime is 8118431143. The reversal of 8118431109 is 9011348118.

8118431109 is a `hidden beast` number, since 8 + 118 + 431 + 109 = 666.

It is not a de Polignac number, because 8118431109 - 2¹⁵ = 8118398341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8118431149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6605107 + ... + 6606335.

It is an arithmetic number, because the mean of its divisors is an integer number (255200400).

Almost surely, 2^8118431109 is an apocalyptic number.

It is an amenable number.

8118431109 is a deficient number, since it is larger than the sum of its proper divisors (4131188091).

8118431109 is a wasteful number, since it uses less digits than its factorization.

8118431109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 8118431109 is about 90102.3368675863. The cubic root of 8118431109 is about 2009.8209545721.

The spelling of 8118431109 in words is "eight billion, one hundred eighteen million, four hundred thirty-one thousand, one hundred nine".