189143659 has 2 divisors, whose sum is σ = 189143660. Its totient is φ = 189143658.

The previous prime is 189143641. The next prime is 189143663. The reversal of 189143659 is 956341981.

189143659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189143659 - 2⁷ = 189143531 is a prime.

It is not a weakly prime, because it can be changed into another prime (189143639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94571829 + 94571830.

It is an arithmetic number, because the mean of its divisors is an integer number (94571830).

Almost surely, 2^189143659 is an apocalyptic number.

189143659 is a deficient number, since it is larger than the sum of its proper divisors (1).

189143659 is an equidigital number, since it uses as much as digits as its factorization.

189143659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 189143659 is about 13752.9509197117. The cubic root of 189143659 is about 574.0247200076.

The spelling of 189143659 in words is "one hundred eighty-nine million, one hundred forty-three thousand, six hundred fifty-nine".