208385738394 has 8 divisors (see below), whose sum is σ = 416771476800. Its totient is φ = 69461912796.

The previous prime is 208385738389. The next prime is 208385738411. The reversal of 208385738394 is 493837583802.

It is a sphenic number, since it is the product of 3 distinct primes.

208385738394 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17365478194 + ... + 17365478205.

It is an arithmetic number, because the mean of its divisors is an integer number (52096434600).

Almost surely, 2^208385738394 is an apocalyptic number.

208385738394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

208385738394 is a wasteful number, since it uses less digits than its factorization.

208385738394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34730956404.

The product of its (nonzero) digits is 34836480, while the sum is 60.

The spelling of 208385738394 in words is "two hundred eight billion, three hundred eighty-five million, seven hundred thirty-eight thousand, three hundred ninety-four".