189340841 has 4 divisors (see below), whose sum is σ = 189677712. Its totient is φ = 189003972.

The previous prime is 189340831. The next prime is 189340933. The reversal of 189340841 is 148043981.

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: 148043981 = 137 ⋅1080613.

It is a cyclic number.

It is not a de Polignac number, because 189340841 - 2²² = 185146537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189340795 and 189340804.

It is not an unprimeable number, because it can be changed into a prime (189340831) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 167591 + ... + 168716.

It is an arithmetic number, because the mean of its divisors is an integer number (47419428).

Almost surely, 2^189340841 is an apocalyptic number.

It is an amenable number.

189340841 is a deficient number, since it is larger than the sum of its proper divisors (336871).

189340841 is an equidigital number, since it uses as much as digits as its factorization.

189340841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336870.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 189340841 is about 13760.1177683914. The cubic root of 189340841 is about 574.2241240535.

The spelling of 189340841 in words is "one hundred eighty-nine million, three hundred forty thousand, eight hundred forty-one".