8468715918 has 64 divisors (see below), whose sum is σ = 18768960000. Its totient is φ = 2530507392.

The previous prime is 8468715889. The next prime is 8468715991. The reversal of 8468715918 is 8195178648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1691583 + ... + 1696581.

It is an arithmetic number, because the mean of its divisors is an integer number (293265000).

Almost surely, 2^8468715918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8468715918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9384480000).

8468715918 is an abundant number, since it is smaller than the sum of its proper divisors (10300244082).

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

8468715918 is a wasteful number, since it uses less digits than its factorization.

8468715918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641.

The product of its digits is 3870720, while the sum is 57.

The square root of 8468715918 is about 92025.6264200358. The cubic root of 8468715918 is about 2038.3207311835.

The spelling of 8468715918 in words is "eight billion, four hundred sixty-eight million, seven hundred fifteen thousand, nine hundred eighteen".