208943193 has 16 divisors (see below), whose sum is σ = 288755712. Its totient is φ = 134250000.

The previous prime is 208943191. The next prime is 208943227. The reversal of 208943193 is 391349802.

It is not a de Polignac number, because 208943193 - 2¹ = 208943191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208943191) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18868 + ... + 27818.

It is an arithmetic number, because the mean of its divisors is an integer number (18047232).

Almost surely, 2^208943193 is an apocalyptic number.

It is an amenable number.

208943193 is a deficient number, since it is larger than the sum of its proper divisors (79812519).

208943193 is a wasteful number, since it uses less digits than its factorization.

208943193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 208943193 is about 14454.8674501014. The cubic root of 208943193 is about 593.3934420931.

The spelling of 208943193 in words is "two hundred eight million, nine hundred forty-three thousand, one hundred ninety-three".