189683885 has 8 divisors (see below), whose sum is σ = 234963456. Its totient is φ = 146851920.

The previous prime is 189683881. The next prime is 189683887. The reversal of 189683885 is 588386981.

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

It is not a de Polignac number, because 189683885 - 2² = 189683881 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 189683885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189683881) 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, 611729 + ... + 612038.

It is an arithmetic number, because the mean of its divisors is an integer number (29370432).

Almost surely, 2^189683885 is an apocalyptic number.

It is an amenable number.

189683885 is a deficient number, since it is larger than the sum of its proper divisors (45279571).

189683885 is a wasteful number, since it uses less digits than its factorization.

189683885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223803.

The product of its digits is 3317760, while the sum is 56.

The square root of 189683885 is about 13772.5772824116. The cubic root of 189683885 is about 574.5707041415.

The spelling of 189683885 in words is "one hundred eighty-nine million, six hundred eighty-three thousand, eight hundred eighty-five".