2686178168 has 16 divisors (see below), whose sum is σ = 5058775080. Its totient is φ = 1337171488.

The previous prime is 2686178167. The next prime is 2686178189. The reversal of 2686178168 is 8618716862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2686178161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737771 + ... + 741402.

Almost surely, 2^2686178168 is an apocalyptic number.

It is an amenable number.

2686178168 is a deficient number, since it is larger than the sum of its proper divisors (2372596912).

2686178168 is a wasteful number, since it uses less digits than its factorization.

2686178168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479406 (or 1479402 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The square root of 2686178168 is about 51828.3529354349. The cubic root of 2686178168 is about 1390.0964631225.

The spelling of 2686178168 in words is "two billion, six hundred eighty-six million, one hundred seventy-eight thousand, one hundred sixty-eight".