38670505791 has 8 divisors (see below), whose sum is σ = 51561605760. Its totient is φ = 25779871512.

The previous prime is 38670505789. The next prime is 38670505807. The reversal of 38670505791 is 19750507683.

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

It is not a de Polignac number, because 38670505791 - 2¹ = 38670505789 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38670505721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200886 + ... + 343068.

It is an arithmetic number, because the mean of its divisors is an integer number (6445200720).

Almost surely, 2^38670505791 is an apocalyptic number.

38670505791 is a deficient number, since it is larger than the sum of its proper divisors (12891099969).

38670505791 is a wasteful number, since it uses less digits than its factorization.

38670505791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232845.

The product of its (nonzero) digits is 1587600, while the sum is 51.

The spelling of 38670505791 in words is "thirty-eight billion, six hundred seventy million, five hundred five thousand, seven hundred ninety-one".