188400488536 has 32 divisors (see below), whose sum is σ = 381797493840. Its totient is φ = 86640144768.

The previous prime is 188400488533. The next prime is 188400488587. The reversal of 188400488536 is 635884004881.

188400488536 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 (188400488531) 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, 3241126 + ... + 3298741.

Almost surely, 2^188400488536 is an apocalyptic number.

It is an amenable number.

188400488536 is an abundant number, since it is smaller than the sum of its proper divisors (193397005304).

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

188400488536 is a wasteful number, since it uses less digits than its factorization.

188400488536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6540163 (or 6540159 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 55.

The spelling of 188400488536 in words is "one hundred eighty-eight billion, four hundred million, four hundred eighty-eight thousand, five hundred thirty-six".