38849815728 has 80 divisors (see below), whose sum is σ = 113886044160. Its totient is φ = 12674401344.

The previous prime is 38849815661. The next prime is 38849815787. The reversal of 38849815728 is 82751894883.

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 15 ways as a sum of consecutive naturals, for example, 936400 + ... + 977007.

It is an arithmetic number, because the mean of its divisors is an integer number (1423575552).

Almost surely, 2^38849815728 is an apocalyptic number.

It is an amenable number.

38849815728 is an abundant number, since it is smaller than the sum of its proper divisors (75036228432).

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

38849815728 is a wasteful number, since it uses less digits than its factorization.

38849815728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913471 (or 1913459 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 38849815728 in words is "thirty-eight billion, eight hundred forty-nine million, eight hundred fifteen thousand, seven hundred twenty-eight".