39838201820 has 24 divisors (see below), whose sum is σ = 83748050064. Its totient is φ = 15918551936.

The previous prime is 39838201817. The next prime is 39838201847. The reversal of 39838201820 is 2810283893.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026014 + ... + 1064133.

It is an arithmetic number, because the mean of its divisors is an integer number (3489502086).

Almost surely, 2^39838201820 is an apocalyptic number.

It is an amenable number.

39838201820 is an abundant number, since it is smaller than the sum of its proper divisors (43909848244).

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

39838201820 is a wasteful number, since it uses less digits than its factorization.

39838201820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091109 (or 2091107 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 39838201820 in words is "thirty-nine billion, eight hundred thirty-eight million, two hundred one thousand, eight hundred twenty".