189873829 has 8 divisors (see below), whose sum is σ = 195816600. Its totient is φ = 183993600.

The previous prime is 189873793. The next prime is 189873869. The reversal of 189873829 is 928378981.

It can be written as a sum of positive squares in 4 ways, for example, as 8352100 + 181521729 = 2890^2 + 13473^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189873829 - 2¹⁵ = 189841061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189873829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189873869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9432 + ... + 21649.

It is an arithmetic number, because the mean of its divisors is an integer number (24477075).

Almost surely, 2^189873829 is an apocalyptic number.

It is an amenable number.

189873829 is a deficient number, since it is larger than the sum of its proper divisors (5942771).

189873829 is a wasteful number, since it uses less digits than its factorization.

189873829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31271.

The product of its digits is 1741824, while the sum is 55.

The square root of 189873829 is about 13779.4712888412. The cubic root of 189873829 is about 574.7624263665.

The spelling of 189873829 in words is "one hundred eighty-nine million, eight hundred seventy-three thousand, eight hundred twenty-nine".