189301289 has 4 divisors (see below), whose sum is σ = 193329024. Its totient is φ = 185273556.

The previous prime is 189301253. The next prime is 189301291. The reversal of 189301289 is 982103981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982103981 = 13669 ⋅71849.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189301289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189301219) 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, 2013797 + ... + 2013890.

It is an arithmetic number, because the mean of its divisors is an integer number (48332256).

Almost surely, 2^189301289 is an apocalyptic number.

It is an amenable number.

189301289 is a deficient number, since it is larger than the sum of its proper divisors (4027735).

189301289 is an equidigital number, since it uses as much as digits as its factorization.

189301289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027734.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 189301289 is about 13758.6804963267. The cubic root of 189301289 is about 574.1841374451.

The spelling of 189301289 in words is "one hundred eighty-nine million, three hundred one thousand, two hundred eighty-nine".