38889591856 has 40 divisors (see below), whose sum is σ = 79332176880. Its totient is φ = 18417233664.

The previous prime is 38889591847. The next prime is 38889591857. The reversal of 38889591856 is 65819598883.

It is not an unprimeable number, because it can be changed into a prime (38889591857) 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, 1653330 + ... + 1676686.

It is an arithmetic number, because the mean of its divisors is an integer number (1983304422).

Almost surely, 2^38889591856 is an apocalyptic number.

It is an amenable number.

38889591856 is an abundant number, since it is smaller than the sum of its proper divisors (40442585024).

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

38889591856 is a wasteful number, since it uses less digits than its factorization.

38889591856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28861 (or 28855 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 70.

The spelling of 38889591856 in words is "thirty-eight billion, eight hundred eighty-nine million, five hundred ninety-one thousand, eight hundred fifty-six".