189074143 has 2 divisors, whose sum is σ = 189074144. Its totient is φ = 189074142.

The previous prime is 189074131. The next prime is 189074159. The reversal of 189074143 is 341470981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189074143 - 2²¹ = 186976991 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189074183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94537071 + 94537072.

It is an arithmetic number, because the mean of its divisors is an integer number (94537072).

Almost surely, 2^189074143 is an apocalyptic number.

189074143 is a deficient number, since it is larger than the sum of its proper divisors (1).

189074143 is an equidigital number, since it uses as much as digits as its factorization.

189074143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 189074143 is about 13750.4233753001. The cubic root of 189074143 is about 573.9543875907.

The spelling of 189074143 in words is "one hundred eighty-nine million, seventy-four thousand, one hundred forty-three".