208258384091 has 4 divisors (see below), whose sum is σ = 208270034592. Its totient is φ = 208246733592.

The previous prime is 208258384003. The next prime is 208258384109. The reversal of 208258384091 is 190483852802.

208258384091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208258384091 - 2¹⁸ = 208258121947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208258381091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5798396 + ... + 5834201.

It is an arithmetic number, because the mean of its divisors is an integer number (52067508648).

Almost surely, 2^208258384091 is an apocalyptic number.

208258384091 is a deficient number, since it is larger than the sum of its proper divisors (11650501).

208258384091 is a wasteful number, since it uses less digits than its factorization.

208258384091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11650500.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 208258384091 in words is "two hundred eight billion, two hundred fifty-eight million, three hundred eighty-four thousand, ninety-one".