38123844817 has 4 divisors (see below), whose sum is σ = 38124311616. Its totient is φ = 38123378020.

The previous prime is 38123844797. The next prime is 38123844851. The reversal of 38123844817 is 71844832183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38123844817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38123884817) 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 3 ways as a sum of consecutive naturals, for example, 75109 + ... + 286162.

It is an arithmetic number, because the mean of its divisors is an integer number (9531077904).

Almost surely, 2^38123844817 is an apocalyptic number.

It is an amenable number.

38123844817 is a deficient number, since it is larger than the sum of its proper divisors (466799).

38123844817 is a wasteful number, since it uses less digits than its factorization.

38123844817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466798.

The product of its digits is 1032192, while the sum is 49.

The spelling of 38123844817 in words is "thirty-eight billion, one hundred twenty-three million, eight hundred forty-four thousand, eight hundred seventeen".