38840418841 has 6 divisors (see below), whose sum is σ = 45181711770. Its totient is φ = 33291787536.

The previous prime is 38840418839. The next prime is 38840418853. The reversal of 38840418841 is 14881404883.

It can be written as a sum of positive squares in only one way, i.e., 23280351241 + 15560067600 = 152579^2 + 124740^2 .

It is not a de Polignac number, because 38840418841 - 2¹ = 38840418839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 792661609 = 38840418841 / (3 + 8 + 8 + 4 + 0 + 4 + 1 + 8 + 8 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38840418341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396330756 + ... + 396330853.

It is an arithmetic number, because the mean of its divisors is an integer number (7530285295).

Almost surely, 2^38840418841 is an apocalyptic number.

It is an amenable number.

38840418841 is a deficient number, since it is larger than the sum of its proper divisors (6341292929).

38840418841 is an equidigital number, since it uses as much as digits as its factorization.

38840418841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792661623 (or 792661616 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 49.

The spelling of 38840418841 in words is "thirty-eight billion, eight hundred forty million, four hundred eighteen thousand, eight hundred forty-one".