189302143 has 4 divisors (see below), whose sum is σ = 189407808. Its totient is φ = 189196480.

The previous prime is 189302131. The next prime is 189302159. The reversal of 189302143 is 341203981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189302143 - 2¹⁷ = 189171071 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189302173) 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, 50098 + ... + 53743.

It is an arithmetic number, because the mean of its divisors is an integer number (47351952).

Almost surely, 2^189302143 is an apocalyptic number.

189302143 is a deficient number, since it is larger than the sum of its proper divisors (105665).

189302143 is a wasteful number, since it uses less digits than its factorization.

189302143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105664.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 189302143 is about 13758.7115312445. The cubic root of 189302143 is about 574.1850008879.

The spelling of 189302143 in words is "one hundred eighty-nine million, three hundred two thousand, one hundred forty-three".