6838542221 has 8 divisors (see below), whose sum is σ = 7826232960. Its totient is φ = 5853540528.

The previous prime is 6838542167. The next prime is 6838542223. The reversal of 6838542221 is 1222458386.

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

It is a cyclic number.

It is not a de Polignac number, because 6838542221 - 2¹⁰ = 6838541197 is a prime.

It is a super-2 number, since 2×6838542221² = 93531319416799225682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6838542223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666806 + ... + 676983.

It is an arithmetic number, because the mean of its divisors is an integer number (978279120).

Almost surely, 2^6838542221 is an apocalyptic number.

It is an amenable number.

6838542221 is a deficient number, since it is larger than the sum of its proper divisors (987690739).

6838542221 is a wasteful number, since it uses less digits than its factorization.

6838542221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344523.

The product of its digits is 184320, while the sum is 41.

The square root of 6838542221 is about 82695.4788425583. The cubic root of 6838542221 is about 1898.1091272375.

The spelling of 6838542221 in words is "six billion, eight hundred thirty-eight million, five hundred forty-two thousand, two hundred twenty-one".