8765380944 has 180 divisors, whose sum is σ = 25648272468. Its totient is φ = 2794106880.

The previous prime is 8765380907. The next prime is 8765380963. The reversal of 8765380944 is 4490835678.

It can be written as a sum of positive squares in 2 ways, for example, as 2949793344 + 5815587600 = 54312^2 + 76260^2 .

It is a super-2 number, since 2×8765380944² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13422922 + ... + 13423574.

Almost surely, 2^8765380944 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 8765380944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12824136234).

8765380944 is an abundant number, since it is smaller than the sum of its proper divisors (16882891524).

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

8765380944 is a wasteful number, since it uses less digits than its factorization.

8765380944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 8765380944 is about 93623.6131753096. The cubic root of 8765380944 is about 2061.8493575669.

The spelling of 8765380944 in words is "eight billion, seven hundred sixty-five million, three hundred eighty thousand, nine hundred forty-four".