189307 has 2 divisors, whose sum is σ = 189308. Its totient is φ = 189306.

The previous prime is 189271. The next prime is 189311. The reversal of 189307 is 703981.

It is a strong prime.

It is an emirp because it is prime and its reverse (703981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189307 - 2¹⁵ = 156539 is a prime.

It is a Chen prime.

189307 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (189337) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94653 + 94654.

It is an arithmetic number, because the mean of its divisors is an integer number (94654).

2¹⁸⁹³⁰⁷ is an apocalyptic number.

189307 is a deficient number, since it is larger than the sum of its proper divisors (1).

189307 is an equidigital number, since it uses as much as digits as its factorization.

189307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 189307 is about 435.0942426647. The cubic root of 189307 is about 57.4189911543.

It can be divided in two parts, 189 and 307, that added together give a triangular number (496 = T₃₁).

The spelling of 189307 in words is "one hundred eighty-nine thousand, three hundred seven".