188481934578 has 16 divisors (see below), whose sum is σ = 430815850560. Its totient is φ = 53851981296.

The previous prime is 188481934577. The next prime is 188481934607. The reversal of 188481934578 is 875439184881.

188481934578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (188481934573) 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, 2243832513 + ... + 2243832596.

It is an arithmetic number, because the mean of its divisors is an integer number (26925990660).

Almost surely, 2^188481934578 is an apocalyptic number.

188481934578 is an abundant number, since it is smaller than the sum of its proper divisors (242333915982).

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

188481934578 is a wasteful number, since it uses less digits than its factorization.

188481934578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487665121.

The product of its digits is 61931520, while the sum is 66.

The spelling of 188481934578 in words is "one hundred eighty-eight billion, four hundred eighty-one million, nine hundred thirty-four thousand, five hundred seventy-eight".