38391840193 has 16 divisors (see below), whose sum is σ = 44190604800. Its totient is φ = 32671828800.

The previous prime is 38391840191. The next prime is 38391840203. The reversal of 38391840193 is 39104819383.

38391840193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 38391840193 - 2¹ = 38391840191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38391840191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2778963 + ... + 2792743.

It is an arithmetic number, because the mean of its divisors is an integer number (2761912800).

Almost surely, 2^38391840193 is an apocalyptic number.

It is an amenable number.

38391840193 is a deficient number, since it is larger than the sum of its proper divisors (5798764607).

38391840193 is a wasteful number, since it uses less digits than its factorization.

38391840193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16608.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 38391840193 in words is "thirty-eight billion, three hundred ninety-one million, eight hundred forty thousand, one hundred ninety-three".