189155143 has 8 divisors (see below), whose sum is σ = 190670336. Its totient is φ = 187644600.

The previous prime is 189155101. The next prime is 189155159. The reversal of 189155143 is 341551981.

189155143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189155143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189155173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160948 + ... + 162118.

It is an arithmetic number, because the mean of its divisors is an integer number (23833792).

Almost surely, 2^189155143 is an apocalyptic number.

189155143 is a deficient number, since it is larger than the sum of its proper divisors (1515193).

189155143 is a wasteful number, since it uses less digits than its factorization.

189155143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325.

The product of its digits is 21600, while the sum is 37.

The square root of 189155143 is about 13753.3684237717. The cubic root of 189155143 is about 574.0363372206.

The spelling of 189155143 in words is "one hundred eighty-nine million, one hundred fifty-five thousand, one hundred forty-three".