189985703 has 4 divisors (see below), whose sum is σ = 194028000. Its totient is φ = 185943408.

The previous prime is 189985673. The next prime is 189985717. The reversal of 189985703 is 307589981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189985703 - 2¹⁰ = 189984679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189985793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021078 + ... + 2021171.

It is an arithmetic number, because the mean of its divisors is an integer number (48507000).

Almost surely, 2^189985703 is an apocalyptic number.

189985703 is a deficient number, since it is larger than the sum of its proper divisors (4042297).

189985703 is an equidigital number, since it uses as much as digits as its factorization.

189985703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042296.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 189985703 is about 13783.5301356365. The cubic root of 189985703 is about 574.8752878869.

The spelling of 189985703 in words is "one hundred eighty-nine million, nine hundred eighty-five thousand, seven hundred three".