189388005884 has 24 divisors (see below), whose sum is σ = 413210195328. Its totient is φ = 73787534640.

The previous prime is 189388005883. The next prime is 189388005931. The reversal of 189388005884 is 488500883981.

189388005884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189388005883) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 307447754 + ... + 307448369.

It is an arithmetic number, because the mean of its divisors is an integer number (17217091472).

Almost surely, 2^189388005884 is an apocalyptic number.

189388005884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189388005884 is an abundant number, since it is smaller than the sum of its proper divisors (223822189444).

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

189388005884 is a wasteful number, since it uses less digits than its factorization.

189388005884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614896145 (or 614896143 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 62.

The spelling of 189388005884 in words is "one hundred eighty-nine billion, three hundred eighty-eight million, five thousand, eight hundred eighty-four".