8228372138 has 12 divisors (see below), whose sum is σ = 14357669922. Its totient is φ = 3526445160.

The previous prime is 8228372099. The next prime is 8228372149. The reversal of 8228372138 is 8312738228.

It can be written as a sum of positive squares in only one way, i.e., 7704099529 + 524272609 = 87773^2 + 22897^2 .

It is a super-3 number, since 3×8228372138³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41981393 + ... + 41981588.

Almost surely, 2^8228372138 is an apocalyptic number.

8228372138 is a deficient number, since it is larger than the sum of its proper divisors (6129297784).

8228372138 is a wasteful number, since it uses less digits than its factorization.

8228372138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83962997 (or 83962990 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 8228372138 is about 90710.3750295411. The cubic root of 8228372138 is about 2018.8527401976.

The spelling of 8228372138 in words is "eight billion, two hundred twenty-eight million, three hundred seventy-two thousand, one hundred thirty-eight".