189270445678 has 4 divisors (see below), whose sum is σ = 283905668520. Its totient is φ = 94635222838.

The previous prime is 189270445667. The next prime is 189270445681. The reversal of 189270445678 is 876544072981.

189270445678 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 a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 47317611418 + ... + 47317611421.

It is an arithmetic number, because the mean of its divisors is an integer number (70976417130).

Almost surely, 2^189270445678 is an apocalyptic number.

189270445678 is a deficient number, since it is larger than the sum of its proper divisors (94635222842).

189270445678 is an equidigital number, since it uses as much as digits as its factorization.

189270445678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94635222841.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 189270445678 in words is "one hundred eighty-nine billion, two hundred seventy million, four hundred forty-five thousand, six hundred seventy-eight".