8317377918 has 20 divisors (see below), whose sum is σ = 18637087920. Its totient is φ = 2772459252.

The previous prime is 8317377911. The next prime is 8317377941. The reversal of 8317377918 is 8197737138.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8317377911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25670758 + ... + 25671081.

It is an arithmetic number, because the mean of its divisors is an integer number (931854396).

Almost surely, 2^8317377918 is an apocalyptic number.

8317377918 is an abundant number, since it is smaller than the sum of its proper divisors (10319710002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8317377918 is a wasteful number, since it uses less digits than its factorization.

8317377918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51341853 (or 51341844 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 8317377918 is about 91199.6596375228. The cubic root of 8317377918 is about 2026.1059177235.

The spelling of 8317377918 in words is "eight billion, three hundred seventeen million, three hundred seventy-seven thousand, nine hundred eighteen".