189659853 has 16 divisors (see below), whose sum is σ = 281635200. Its totient is φ = 126144000.

The previous prime is 189659851. The next prime is 189659857. The reversal of 189659853 is 358956981.

It is a happy number.

It is not a de Polignac number, because 189659853 - 2¹ = 189659851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189659853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189659851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3853 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (17602200).

Almost surely, 2^189659853 is an apocalyptic number.

It is an amenable number.

189659853 is a deficient number, since it is larger than the sum of its proper divisors (91975347).

189659853 is a wasteful number, since it uses less digits than its factorization.

189659853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16449 (or 16443 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 189659853 is about 13771.7047964295. The cubic root of 189659853 is about 574.5464380380.

The spelling of 189659853 in words is "one hundred eighty-nine million, six hundred fifty-nine thousand, eight hundred fifty-three".