189907323 has 16 divisors (see below), whose sum is σ = 269166240. Its totient is φ = 118685696.

The previous prime is 189907259. The next prime is 189907327. The reversal of 189907323 is 323709981.

It is a cyclic number.

It is not a de Polignac number, because 189907323 - 2⁶ = 189907259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189907327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5863 + ... + 20351.

It is an arithmetic number, because the mean of its divisors is an integer number (16822890).

Almost surely, 2^189907323 is an apocalyptic number.

189907323 is a deficient number, since it is larger than the sum of its proper divisors (79258917).

189907323 is a wasteful number, since it uses less digits than its factorization.

189907323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14766.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 189907323 is about 13780.6865939256. The cubic root of 189907323 is about 574.7962206690.

The spelling of 189907323 in words is "one hundred eighty-nine million, nine hundred seven thousand, three hundred twenty-three".