189783243 has 24 divisors (see below), whose sum is σ = 306157488. Its totient is φ = 116787744.

The previous prime is 189783241. The next prime is 189783247. The reversal of 189783243 is 342387981.

It is not a de Polignac number, because 189783243 - 2¹ = 189783241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189783241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26880 + ... + 33197.

It is an arithmetic number, because the mean of its divisors is an integer number (12756562).

Almost surely, 2^189783243 is an apocalyptic number.

189783243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

189783243 is a deficient number, since it is larger than the sum of its proper divisors (116374245).

189783243 is an equidigital number, since it uses as much as digits as its factorization.

189783243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60105 (or 60093 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 189783243 is about 13776.1839055669. The cubic root of 189783243 is about 574.6710082715.

The spelling of 189783243 in words is "one hundred eighty-nine million, seven hundred eighty-three thousand, two hundred forty-three".