189445315 has 8 divisors (see below), whose sum is σ = 232621488. Its totient is φ = 148031520.

The previous prime is 189445261. The next prime is 189445327. The reversal of 189445315 is 513544981.

189445315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189445315 - 2⁹ = 189444803 is a prime.

It is a Duffinian 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, 440356 + ... + 440785.

It is an arithmetic number, because the mean of its divisors is an integer number (29077686).

Almost surely, 2^189445315 is an apocalyptic number.

189445315 is a deficient number, since it is larger than the sum of its proper divisors (43176173).

189445315 is an equidigital number, since it uses as much as digits as its factorization.

189445315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881189.

The product of its digits is 86400, while the sum is 40.

The square root of 189445315 is about 13763.9135059764. The cubic root of 189445315 is about 574.3297192687.

The spelling of 189445315 in words is "one hundred eighty-nine million, four hundred forty-five thousand, three hundred fifteen".