189071 has 4 divisors (see below), whose sum is σ = 193512. Its totient is φ = 184632.

The previous prime is 189067. The next prime is 189127. The reversal of 189071 is 170981.

189071 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170981 = 19 ⋅8999.

It is a cyclic number.

It is not a de Polignac number, because 189071 - 2² = 189067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189011) 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, 2156 + ... + 2241.

It is an arithmetic number, because the mean of its divisors is an integer number (48378).

2¹⁸⁹⁰⁷¹ is an apocalyptic number.

189071 is a deficient number, since it is larger than the sum of its proper divisors (4441).

189071 is an equidigital number, since it uses as much as digits as its factorization.

189071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 189071 is about 434.8229524761. The cubic root of 189071 is about 57.3951207271.

The spelling of 189071 in words is "one hundred eighty-nine thousand, seventy-one".