38400385903 has 8 divisors (see below), whose sum is σ = 42578073936. Its totient is φ = 34337155200.

The previous prime is 38400385901. The next prime is 38400385909. The reversal of 38400385903 is 30958300483.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38400385903 - 2¹ = 38400385901 is a prime.

It is a super-3 number, since 3×38400385903³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38400385903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38400385901) 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, 28613626 + ... + 28614967.

It is an arithmetic number, because the mean of its divisors is an integer number (5322259242).

Almost surely, 2^38400385903 is an apocalyptic number.

38400385903 is a deficient number, since it is larger than the sum of its proper divisors (4177688033).

38400385903 is a wasteful number, since it uses less digits than its factorization.

38400385903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57228665.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 38400385903 in words is "thirty-eight billion, four hundred million, three hundred eighty-five thousand, nine hundred three".