189532663 has 4 divisors (see below), whose sum is σ = 189574488. Its totient is φ = 189490840.

The previous prime is 189532621. The next prime is 189532697. The reversal of 189532663 is 366235981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366235981 = 17 ⋅21543293.

It is a cyclic number.

It is not a de Polignac number, because 189532663 - 2⁹ = 189532151 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 (189532363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13156 + ... + 23497.

It is an arithmetic number, because the mean of its divisors is an integer number (47393622).

Almost surely, 2^189532663 is an apocalyptic number.

189532663 is a deficient number, since it is larger than the sum of its proper divisors (41825).

189532663 is an equidigital number, since it uses as much as digits as its factorization.

189532663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41824.

The product of its digits is 233280, while the sum is 43.

The square root of 189532663 is about 13767.0862204026. The cubic root of 189532663 is about 574.4179748939.

The spelling of 189532663 in words is "one hundred eighty-nine million, five hundred thirty-two thousand, six hundred sixty-three".