8159386144 has 192 divisors, whose sum is σ = 21057926400. Its totient is φ = 3021815808.

The previous prime is 8159386133. The next prime is 8159386189. The reversal of 8159386144 is 4416839518.

It is a happy 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, 4923364 + ... + 4925020.

It is an arithmetic number, because the mean of its divisors is an integer number (109676700).

Almost surely, 2^8159386144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8159386144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10528963200).

8159386144 is an abundant number, since it is smaller than the sum of its proper divisors (12898540256).

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

8159386144 is a wasteful number, since it uses less digits than its factorization.

8159386144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1787 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 8159386144 is about 90329.3205111164. The cubic root of 8159386144 is about 2013.1949340806.

The spelling of 8159386144 in words is "eight billion, one hundred fifty-nine million, three hundred eighty-six thousand, one hundred forty-four".