189006143 has 2 divisors, whose sum is σ = 189006144. Its totient is φ = 189006142.

The previous prime is 189006131. The next prime is 189006193. The reversal of 189006143 is 341600981.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189006143 - 2¹⁰ = 189005119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189006193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94503071 + 94503072.

It is an arithmetic number, because the mean of its divisors is an integer number (94503072).

Almost surely, 2^189006143 is an apocalyptic number.

189006143 is a deficient number, since it is larger than the sum of its proper divisors (1).

189006143 is an equidigital number, since it uses as much as digits as its factorization.

189006143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 189006143 is about 13747.9505018021. The cubic root of 189006143 is about 573.8855722968.

The spelling of 189006143 in words is "one hundred eighty-nine million, six thousand, one hundred forty-three".