169681868 has 6 divisors (see below), whose sum is σ = 296943276. Its totient is φ = 84840932.

The previous prime is 169681849. The next prime is 169681873. The reversal of 169681868 is 868186961.

It is a happy 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 as a sum of consecutive naturals, namely, 21210230 + ... + 21210237.

It is an arithmetic number, because the mean of its divisors is an integer number (49490546).

Almost surely, 2^169681868 is an apocalyptic number.

It is an amenable number.

169681868 is a deficient number, since it is larger than the sum of its proper divisors (127261408).

169681868 is a wasteful number, since it uses less digits than its factorization.

169681868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42420471 (or 42420469 counting only the distinct ones).

The product of its digits is 995328, while the sum is 53.

The square root of 169681868 is about 13026.1992921957. The cubic root of 169681868 is about 553.6200525316.

The spelling of 169681868 in words is "one hundred sixty-nine million, six hundred eighty-one thousand, eight hundred sixty-eight".