189356339 has 4 divisors (see below), whose sum is σ = 195464640. Its totient is φ = 183248040.

The previous prime is 189356317. The next prime is 189356347. The reversal of 189356339 is 933653981.

189356339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933653981 = 13 ⋅71819537.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189356339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189356293 and 189356302.

It is not an unprimeable number, because it can be changed into a prime (189356239) 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, 3054104 + ... + 3054165.

It is an arithmetic number, because the mean of its divisors is an integer number (48866160).

Almost surely, 2^189356339 is an apocalyptic number.

189356339 is a deficient number, since it is larger than the sum of its proper divisors (6108301).

189356339 is an equidigital number, since it uses as much as digits as its factorization.

189356339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108300.

The product of its digits is 524880, while the sum is 47.

The square root of 189356339 is about 13760.6809061180. The cubic root of 189356339 is about 574.2397908313.

The spelling of 189356339 in words is "one hundred eighty-nine million, three hundred fifty-six thousand, three hundred thirty-nine".