168385550 has 12 divisors (see below), whose sum is σ = 313197216. Its totient is φ = 67354200.

The previous prime is 168385541. The next prime is 168385601. The reversal of 168385550 is 55583861.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168385498 and 168385507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1683806 + ... + 1683905.

It is an arithmetic number, because the mean of its divisors is an integer number (26099768).

Almost surely, 2^168385550 is an apocalyptic number.

168385550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168385550 is a deficient number, since it is larger than the sum of its proper divisors (144811666).

168385550 is a wasteful number, since it uses less digits than its factorization.

168385550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367723 (or 3367718 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 168385550 is about 12976.3457876245. The cubic root of 168385550 is about 552.2066172366.

The spelling of 168385550 in words is "one hundred sixty-eight million, three hundred eighty-five thousand, five hundred fifty".