8138844812 has 12 divisors (see below), whose sum is σ = 16277689680. Its totient is φ = 3488076336.

The previous prime is 8138844767. The next prime is 8138844829. The reversal of 8138844812 is 2184488318.

8138844812 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145336487 + ... + 145336542.

It is an arithmetic number, because the mean of its divisors is an integer number (1356474140).

Almost surely, 2^8138844812 is an apocalyptic number.

It is an amenable number.

8138844812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8138844812 is a wasteful number, since it uses less digits than its factorization.

8138844812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290673040 (or 290673038 counting only the distinct ones).

The product of its digits is 393216, while the sum is 47.

The square root of 8138844812 is about 90215.5463986114. The cubic root of 8138844812 is about 2011.5041019440.

The spelling of 8138844812 in words is "eight billion, one hundred thirty-eight million, eight hundred forty-four thousand, eight hundred twelve".