8126681538 has 16 divisors (see below), whose sum is σ = 16270182720. Its totient is φ = 2706090576.

The previous prime is 8126681483. The next prime is 8126681567. The reversal of 8126681538 is 8351866218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694533 + ... + 706136.

It is an arithmetic number, because the mean of its divisors is an integer number (1016886420).

Almost surely, 2^8126681538 is an apocalyptic number.

8126681538 is an abundant number, since it is smaller than the sum of its proper divisors (8143501182).

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

8126681538 is a wasteful number, since it uses less digits than its factorization.

8126681538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401641.

The product of its digits is 552960, while the sum is 48.

The square root of 8126681538 is about 90148.1088986341. The cubic root of 8126681538 is about 2010.5015569722.

The spelling of 8126681538 in words is "eight billion, one hundred twenty-six million, six hundred eighty-one thousand, five hundred thirty-eight".