38381281028 has 12 divisors (see below), whose sum is σ = 67193183232. Its totient is φ = 19183228680.

The previous prime is 38381281007. The next prime is 38381281039. The reversal of 38381281028 is 82018218383.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 38381281028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841300 + ... + 1862027.

It is an arithmetic number, because the mean of its divisors is an integer number (5599431936).

Almost surely, 2^38381281028 is an apocalyptic number.

It is an amenable number.

38381281028 is a deficient number, since it is larger than the sum of its proper divisors (28811902204).

38381281028 is a wasteful number, since it uses less digits than its factorization.

38381281028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705922 (or 3705920 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 38381281028 in words is "thirty-eight billion, three hundred eighty-one million, two hundred eighty-one thousand, twenty-eight".