208385538 has 16 divisors (see below), whose sum is σ = 417409536. Its totient is φ = 69355440.

The previous prime is 208385531. The next prime is 208385539. The reversal of 208385538 is 835583802.

208385538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 208385538.

It is not an unprimeable number, because it can be changed into a prime (208385531) 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 7 ways as a sum of consecutive naturals, for example, 22306 + ... + 30237.

It is an arithmetic number, because the mean of its divisors is an integer number (26088096).

Almost surely, 2^208385538 is an apocalyptic number.

208385538 is an abundant number, since it is smaller than the sum of its proper divisors (209023998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208385538 is a wasteful number, since it uses less digits than its factorization.

208385538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53209.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 208385538 is about 14435.5650391663. The cubic root of 208385538 is about 592.8650629941.

The spelling of 208385538 in words is "two hundred eight million, three hundred eighty-five thousand, five hundred thirty-eight".