188088442445 has 4 divisors (see below), whose sum is σ = 225706130940. Its totient is φ = 150470753952.

The previous prime is 188088442439. The next prime is 188088442453. The reversal of 188088442445 is 544244880881.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143184289609 + 44904152836 = 378397^2 + 211906^2 .

It is a cyclic number.

It is not a de Polignac number, because 188088442445 - 2¹⁴ = 188088426061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18808844240 + ... + 18808844249.

It is an arithmetic number, because the mean of its divisors is an integer number (56426532735).

Almost surely, 2^188088442445 is an apocalyptic number.

It is an amenable number.

188088442445 is a deficient number, since it is larger than the sum of its proper divisors (37617688495).

188088442445 is an equidigital number, since it uses as much as digits as its factorization.

188088442445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37617688494.

The product of its (nonzero) digits is 10485760, while the sum is 56.

The spelling of 188088442445 in words is "one hundred eighty-eight billion, eighty-eight million, four hundred forty-two thousand, four hundred forty-five".