189045971 has 8 divisors (see below), whose sum is σ = 192822000. Its totient is φ = 185289120.

The previous prime is 189045929. The next prime is 189045979. The reversal of 189045971 is 179540981.

189045971 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 a cyclic number.

It is not a de Polignac number, because 189045971 - 2¹⁴ = 189029587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189045979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16001 + ... + 25181.

It is an arithmetic number, because the mean of its divisors is an integer number (24102750).

Almost surely, 2^189045971 is an apocalyptic number.

189045971 is a deficient number, since it is larger than the sum of its proper divisors (3776029).

189045971 is an equidigital number, since it uses as much as digits as its factorization.

189045971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9589.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 189045971 is about 13749.3989323170. The cubic root of 189045971 is about 573.9258798214.

The spelling of 189045971 in words is "one hundred eighty-nine million, forty-five thousand, nine hundred seventy-one".