189241808208 has 80 divisors (see below), whose sum is σ = 493690413696. Its totient is φ = 62461900800.

The previous prime is 189241808183. The next prime is 189241808263. The reversal of 189241808208 is 802808142981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2226916 + ... + 2310332.

Almost surely, 2^189241808208 is an apocalyptic number.

It is an amenable number.

189241808208 is an abundant number, since it is smaller than the sum of its proper divisors (304448605488).

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

189241808208 is a wasteful number, since it uses less digits than its factorization.

189241808208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83892 (or 83886 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 51.

The spelling of 189241808208 in words is "one hundred eighty-nine billion, two hundred forty-one million, eight hundred eight thousand, two hundred eight".