8168448618 has 128 divisors (see below), whose sum is σ = 20611065600. Its totient is φ = 2375251200.

The previous prime is 8168448599. The next prime is 8168448623.

It is a happy number.

8168448618 is a `hidden beast` number, since 8 + 16 + 8 + 4 + 4 + 8 + 618 = 666.

8168448618 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8168448618² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2978728 + ... + 2981468.

It is an arithmetic number, because the mean of its divisors is an integer number (161023950).

Almost surely, 2^8168448618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8168448618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10305532800).

8168448618 is an abundant number, since it is smaller than the sum of its proper divisors (12442616982).

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

8168448618 is a wasteful number, since it uses less digits than its factorization.

8168448618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965 (or 2959 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 54.

The square root of 8168448618 is about 90379.4701135164. The cubic root of 8168448618 is about 2013.9399973314.

The spelling of 8168448618 in words is "eight billion, one hundred sixty-eight million, four hundred forty-eight thousand, six hundred eighteen".