189963 has 6 divisors (see below), whose sum is σ = 274404. Its totient is φ = 126636.

The previous prime is 189961. The next prime is 189967. The reversal of 189963 is 369981.

189963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189963 - 2¹ = 189961 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 189963.

It is not an unprimeable number, because it can be changed into a prime (189961) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10545 + ... + 10562.

It is an arithmetic number, because the mean of its divisors is an integer number (45734).

2¹⁸⁹⁹⁶³ is an apocalyptic number.

189963 is a deficient number, since it is larger than the sum of its proper divisors (84441).

189963 is a wasteful number, since it uses less digits than its factorization.

189963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21113 (or 21110 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 189963 is about 435.8474503768. The cubic root of 189963 is about 57.4852388070.

The spelling of 189963 in words is "one hundred eighty-nine thousand, nine hundred sixty-three".