38086121990 has 32 divisors (see below), whose sum is σ = 79340359680. Its totient is φ = 12892804704.

The previous prime is 38086121873. The next prime is 38086122031. The reversal of 38086121990 is 9912168083.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3438062 + ... + 3449121.

It is an arithmetic number, because the mean of its divisors is an integer number (2479386240).

Almost surely, 2^38086121990 is an apocalyptic number.

38086121990 is an abundant number, since it is smaller than the sum of its proper divisors (41254237690).

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

38086121990 is a wasteful number, since it uses less digits than its factorization.

38086121990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887276.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 38086121990 in words is "thirty-eight billion, eighty-six million, one hundred twenty-one thousand, nine hundred ninety".