189328771 has 4 divisors (see below), whose sum is σ = 191280712. Its totient is φ = 187376832.

The previous prime is 189328759. The next prime is 189328781. The reversal of 189328771 is 177823981.

189328771 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189328771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189328781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975825 + ... + 976018.

It is an arithmetic number, because the mean of its divisors is an integer number (47820178).

Almost surely, 2^189328771 is an apocalyptic number.

189328771 is a deficient number, since it is larger than the sum of its proper divisors (1951941).

189328771 is an equidigital number, since it uses as much as digits as its factorization.

189328771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951940.

The product of its digits is 169344, while the sum is 46.

The square root of 189328771 is about 13759.6791750389. The cubic root of 189328771 is about 574.2119220154.

The spelling of 189328771 in words is "one hundred eighty-nine million, three hundred twenty-eight thousand, seven hundred seventy-one".