41838338921 has 4 divisors (see below), whose sum is σ = 41842224000. Its totient is φ = 41834453844.

The previous prime is 41838338917. The next prime is 41838338953. The reversal of 41838338921 is 12983383814.

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 an emirpimes, since its reverse is a distinct semiprime: 12983383814 = 2 ⋅6491691907.

It is a cyclic number.

It is not a de Polignac number, because 41838338921 - 2² = 41838338917 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 41838338921.

It is not an unprimeable number, because it can be changed into a prime (41838338821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926341 + ... + 1947938.

It is an arithmetic number, because the mean of its divisors is an integer number (10460556000).

Almost surely, 2^41838338921 is an apocalyptic number.

It is an amenable number.

41838338921 is a deficient number, since it is larger than the sum of its proper divisors (3885079).

41838338921 is a wasteful number, since it uses less digits than its factorization.

41838338921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885078.

The product of its digits is 995328, while the sum is 50.

The spelling of 41838338921 in words is "forty-one billion, eight hundred thirty-eight million, three hundred thirty-eight thousand, nine hundred twenty-one".