188164537040 has 40 divisors (see below), whose sum is σ = 437540674920. Its totient is φ = 75255814656.

The previous prime is 188164537039. The next prime is 188164537063. The reversal of 188164537040 is 40735461881.

It can be written as a sum of positive squares in 4 ways, for example, as 46192325776 + 141972211264 = 214924^2 + 376792^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464966 + ... + 769754.

It is an arithmetic number, because the mean of its divisors is an integer number (10938516873).

Almost surely, 2^188164537040 is an apocalyptic number.

188164537040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188164537040 is an abundant number, since it is smaller than the sum of its proper divisors (249376137880).

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

188164537040 is a wasteful number, since it uses less digits than its factorization.

188164537040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312519 (or 312513 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 188164537040 in words is "one hundred eighty-eight billion, one hundred sixty-four million, five hundred thirty-seven thousand, forty".