8138445223 has 16 divisors (see below), whose sum is σ = 8653311360. Its totient is φ = 7643725056.

The previous prime is 8138445187. The next prime is 8138445253. The reversal of 8138445223 is 3225448318.

It is a de Polignac number, because none of the positive numbers 2^k-8138445223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138445253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94893 + ... + 159001.

It is an arithmetic number, because the mean of its divisors is an integer number (540831960).

Almost surely, 2^8138445223 is an apocalyptic number.

8138445223 is a deficient number, since it is larger than the sum of its proper divisors (514866137).

8138445223 is a wasteful number, since it uses less digits than its factorization.

8138445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64266.

The product of its digits is 184320, while the sum is 40.

The square root of 8138445223 is about 90213.3317365011. The cubic root of 8138445223 is about 2011.4711821179.

The spelling of 8138445223 in words is "eight billion, one hundred thirty-eight million, four hundred forty-five thousand, two hundred twenty-three".