8109518 has 4 divisors (see below), whose sum is σ = 12164280. Its totient is φ = 4054758.

The previous prime is 8109511. The next prime is 8109529. The reversal of 8109518 is 8159018.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8109511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027378 + ... + 2027381.

It is an arithmetic number, because the mean of its divisors is an integer number (3041070).

Almost surely, 2^8109518 is an apocalyptic number.

8109518 is a deficient number, since it is larger than the sum of its proper divisors (4054762).

8109518 is a wasteful number, since it uses less digits than its factorization.

8109518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054761.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 8109518 is about 2847.7215453762. The cubic root of 8109518 is about 200.9085167376.

The spelling of 8109518 in words is "eight million, one hundred nine thousand, five hundred eighteen".