188968209030 has 48 divisors (see below), whose sum is σ = 497236849200. Its totient is φ = 49784393664.

The previous prime is 188968209011. The next prime is 188968209061. The reversal of 188968209030 is 30902869881.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12641005 + ... + 12655944.

It is an arithmetic number, because the mean of its divisors is an integer number (10359101025).

Almost surely, 2^188968209030 is an apocalyptic number.

188968209030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188968209030 is an abundant number, since it is smaller than the sum of its proper divisors (308268640170).

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

188968209030 is a wasteful number, since it uses less digits than its factorization.

188968209030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25297045 (or 25297042 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 188968209030 in words is "one hundred eighty-eight billion, nine hundred sixty-eight million, two hundred nine thousand, thirty".