38657193139 has 4 divisors (see below), whose sum is σ = 39201660720. Its totient is φ = 38112725560.

The previous prime is 38657193073. The next prime is 38657193151. The reversal of 38657193139 is 93139175683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38657193139 - 2¹³ = 38657184947 is a prime.

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 38657193139.

It is not an unprimeable number, because it can be changed into a prime (38657103139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272233684 + ... + 272233825.

It is an arithmetic number, because the mean of its divisors is an integer number (9800415180).

Almost surely, 2^38657193139 is an apocalyptic number.

38657193139 is a deficient number, since it is larger than the sum of its proper divisors (544467581).

38657193139 is an equidigital number, since it uses as much as digits as its factorization.

38657193139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544467580.

The product of its digits is 3674160, while the sum is 55.

It can be divided in two parts, 386571 and 93139, that added together give a triangular number (479710 = T₉₇₉).

The spelling of 38657193139 in words is "thirty-eight billion, six hundred fifty-seven million, one hundred ninety-three thousand, one hundred thirty-nine".