189807245 has 16 divisors (see below), whose sum is σ = 245609280. Its totient is φ = 140342400.

The previous prime is 189807239. The next prime is 189807253. The reversal of 189807245 is 542708981.

It is not a de Polignac number, because 189807245 - 2⁴ = 189807229 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189807196 and 189807205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20471 + ... + 28260.

It is an arithmetic number, because the mean of its divisors is an integer number (15350580).

Almost surely, 2^189807245 is an apocalyptic number.

It is an amenable number.

189807245 is a deficient number, since it is larger than the sum of its proper divisors (55802035).

189807245 is a wasteful number, since it uses less digits than its factorization.

189807245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48796.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 189807245 is about 13777.0550191251. The cubic root of 189807245 is about 574.6952335787.

The spelling of 189807245 in words is "one hundred eighty-nine million, eight hundred seven thousand, two hundred forty-five".