168081878 has 16 divisors (see below), whose sum is σ = 259428960. Its totient is φ = 81624000.

The previous prime is 168081869. The next prime is 168081887. The reversal of 168081878 is 878180861.

It is an interprime number because it is at equal distance from previous prime (168081869) and next prime (168081887).

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 14303 + ... + 23253.

It is an arithmetic number, because the mean of its divisors is an integer number (16214310).

Almost surely, 2^168081878 is an apocalyptic number.

168081878 is a deficient number, since it is larger than the sum of its proper divisors (91347082).

168081878 is a wasteful number, since it uses less digits than its factorization.

168081878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223.

The product of its (nonzero) digits is 172032, while the sum is 47.

The square root of 168081878 is about 12964.6395244912. The cubic root of 168081878 is about 551.8744616673.

The spelling of 168081878 in words is "one hundred sixty-eight million, eighty-one thousand, eight hundred seventy-eight".