8421338168 has 16 divisors (see below), whose sum is σ = 15798215160. Its totient is φ = 4208480800.

The previous prime is 8421338141. The next prime is 8421338171. The reversal of 8421338168 is 8618331248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257123 + ... + 288018.

Almost surely, 2^8421338168 is an apocalyptic number.

It is an amenable number.

8421338168 is a deficient number, since it is larger than the sum of its proper divisors (7376876992).

8421338168 is a wasteful number, since it uses less digits than its factorization.

8421338168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547078 (or 547074 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 8421338168 is about 91767.8493155419. The cubic root of 8421338168 is about 2034.5125309064.

The spelling of 8421338168 in words is "eight billion, four hundred twenty-one million, three hundred thirty-eight thousand, one hundred sixty-eight".