8138924736 has 56 divisors (see below), whose sum is σ = 21603638784. Its totient is φ = 2704231680.

The previous prime is 8138924723. The next prime is 8138924737. The reversal of 8138924736 is 6374298318.

It is not an unprimeable number, because it can be changed into a prime (8138924737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8440 + ... + 127863.

It is an arithmetic number, because the mean of its divisors is an integer number (385779264).

Almost surely, 2^8138924736 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 8138924736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10801819392).

8138924736 is an abundant number, since it is smaller than the sum of its proper divisors (13464714048).

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

8138924736 is a wasteful number, since it uses less digits than its factorization.

8138924736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136629 (or 136619 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 8138924736 is about 90215.9893588714. The cubic root of 8138924736 is about 2011.5106862907.

The spelling of 8138924736 in words is "eight billion, one hundred thirty-eight million, nine hundred twenty-four thousand, seven hundred thirty-six".