208749385882 has 8 divisors (see below), whose sum is σ = 313809253236. Its totient is φ = 104146301472.

The previous prime is 208749385861. The next prime is 208749385891. The reversal of 208749385882 is 288583947802.

208749385882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 456891²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 208749385881 + 1 = 456891^2 + 1^2 .

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

It is a super-2 number, since 2×208749385882² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 114194593 + ... + 114196420.

Almost surely, 2^208749385882 is an apocalyptic number.

208749385882 is a deficient number, since it is larger than the sum of its proper divisors (105059867354).

208749385882 is a wasteful number, since it uses less digits than its factorization.

208749385882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228391472.

The product of its (nonzero) digits is 61931520, while the sum is 64.

The spelling of 208749385882 in words is "two hundred eight billion, seven hundred forty-nine million, three hundred eighty-five thousand, eight hundred eighty-two".