38749443321 has 4 divisors (see below), whose sum is σ = 51665924432. Its totient is φ = 25832962212.

The previous prime is 38749443319. The next prime is 38749443349. The reversal of 38749443321 is 12334494783.

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.

It is not a de Polignac number, because 38749443321 - 2¹ = 38749443319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38749443371) 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, 6458240551 + ... + 6458240556.

It is an arithmetic number, because the mean of its divisors is an integer number (12916481108).

Almost surely, 2^38749443321 is an apocalyptic number.

It is an amenable number.

38749443321 is a deficient number, since it is larger than the sum of its proper divisors (12916481111).

38749443321 is a wasteful number, since it uses less digits than its factorization.

38749443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12916481110.

The product of its digits is 1741824, while the sum is 48.

The spelling of 38749443321 in words is "thirty-eight billion, seven hundred forty-nine million, four hundred forty-three thousand, three hundred twenty-one".