8513138168 has 16 divisors (see below), whose sum is σ = 16087822080. Its totient is φ = 4223052288.

The previous prime is 8513138141. The next prime is 8513138213. The reversal of 8513138168 is 8618313158.

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, 4188521 + ... + 4190552.

It is an arithmetic number, because the mean of its divisors is an integer number (1005488880).

Almost surely, 2^8513138168 is an apocalyptic number.

It is an amenable number.

8513138168 is a deficient number, since it is larger than the sum of its proper divisors (7574683912).

8513138168 is a wasteful number, since it uses less digits than its factorization.

8513138168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379206 (or 8379202 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 8513138168 is about 92266.6687813102. The cubic root of 8513138168 is about 2041.8784894903.

The spelling of 8513138168 in words is "eight billion, five hundred thirteen million, one hundred thirty-eight thousand, one hundred sixty-eight".