8978138168 has 16 divisors (see below), whose sum is σ = 16837190160. Its totient is φ = 4488220800.

The previous prime is 8978138123. The next prime is 8978138177. The reversal of 8978138168 is 8618318798.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59873 + ... + 146768.

It is an arithmetic number, because the mean of its divisors is an integer number (1052324385).

Almost surely, 2^8978138168 is an apocalyptic number.

It is an amenable number.

8978138168 is a deficient number, since it is larger than the sum of its proper divisors (7859051992).

8978138168 is a wasteful number, since it uses less digits than its factorization.

8978138168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212078 (or 212074 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 59.

The square root of 8978138168 is about 94753.0377771605. The cubic root of 8978138168 is about 2078.3982188520.

The spelling of 8978138168 in words is "eight billion, nine hundred seventy-eight million, one hundred thirty-eight thousand, one hundred sixty-eight".