189523307 has 2 divisors, whose sum is σ = 189523308. Its totient is φ = 189523306.

The previous prime is 189523249. The next prime is 189523319. The reversal of 189523307 is 703325981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189523307 - 2⁸ = 189523051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189523357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94761653 + 94761654.

It is an arithmetic number, because the mean of its divisors is an integer number (94761654).

Almost surely, 2^189523307 is an apocalyptic number.

189523307 is a deficient number, since it is larger than the sum of its proper divisors (1).

189523307 is an equidigital number, since it uses as much as digits as its factorization.

189523307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 189523307 is about 13766.7464202694. The cubic root of 189523307 is about 574.4085229733.

The spelling of 189523307 in words is "one hundred eighty-nine million, five hundred twenty-three thousand, three hundred seven".