8163109918 has 4 divisors (see below), whose sum is σ = 12244664880. Its totient is φ = 4081554958.

The previous prime is 8163109907. The next prime is 8163109951. The reversal of 8163109918 is 8199013618.

It is a happy number.

8163109918 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040777478 + ... + 2040777481.

It is an arithmetic number, because the mean of its divisors is an integer number (3061166220).

Almost surely, 2^8163109918 is an apocalyptic number.

8163109918 is a deficient number, since it is larger than the sum of its proper divisors (4081554962).

8163109918 is a wasteful number, since it uses less digits than its factorization.

8163109918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081554961.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 8163109918 is about 90349.9303707535. The cubic root of 8163109918 is about 2013.5011475900.

The spelling of 8163109918 in words is "eight billion, one hundred sixty-three million, one hundred nine thousand, nine hundred eighteen".