189834911 has 4 divisors (see below), whose sum is σ = 216954192. Its totient is φ = 162715632.

The previous prime is 189834877. The next prime is 189834929. The reversal of 189834911 is 119438981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119438981 = 5581 ⋅21401.

It is a cyclic number.

It is not a de Polignac number, because 189834911 - 2²² = 185640607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189834991) 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, 13559630 + ... + 13559643.

It is an arithmetic number, because the mean of its divisors is an integer number (54238548).

Almost surely, 2^189834911 is an apocalyptic number.

189834911 is a deficient number, since it is larger than the sum of its proper divisors (27119281).

189834911 is an equidigital number, since it uses as much as digits as its factorization.

189834911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27119280.

The product of its digits is 62208, while the sum is 44.

The square root of 189834911 is about 13778.0590432760. The cubic root of 189834911 is about 574.7231544411.

The spelling of 189834911 in words is "one hundred eighty-nine million, eight hundred thirty-four thousand, nine hundred eleven".