208390328593 has 16 divisors (see below), whose sum is σ = 213108255360. Its totient is φ = 203741536896.

The previous prime is 208390328527. The next prime is 208390328599. The reversal of 208390328593 is 395823093802.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208390328593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208390328593.

It is not an unprimeable number, because it can be changed into a prime (208390328599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2452030 + ... + 2535592.

It is an arithmetic number, because the mean of its divisors is an integer number (13319265960).

Almost surely, 2^208390328593 is an apocalyptic number.

It is an amenable number.

208390328593 is a deficient number, since it is larger than the sum of its proper divisors (4717926767).

208390328593 is a wasteful number, since it uses less digits than its factorization.

208390328593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83976.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 208390328593 in words is "two hundred eight billion, three hundred ninety million, three hundred twenty-eight thousand, five hundred ninety-three".