188540785443 has 4 divisors (see below), whose sum is σ = 251387713928. Its totient is φ = 125693856960.

The previous prime is 188540785439. The next prime is 188540785457. The reversal of 188540785443 is 344587045881.

188540785443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 188540785443 - 2² = 188540785439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188540785943) 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 3 ways as a sum of consecutive naturals, for example, 31423464238 + ... + 31423464243.

It is an arithmetic number, because the mean of its divisors is an integer number (62846928482).

Almost surely, 2^188540785443 is an apocalyptic number.

188540785443 is a deficient number, since it is larger than the sum of its proper divisors (62846928485).

188540785443 is an equidigital number, since it uses as much as digits as its factorization.

188540785443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62846928484.

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 188540785443 in words is "one hundred eighty-eight billion, five hundred forty million, seven hundred eighty-five thousand, four hundred forty-three".