189169143 has 16 divisors (see below), whose sum is σ = 255269856. Its totient is φ = 124600320.

The previous prime is 189169103. The next prime is 189169147. The reversal of 189169143 is 341961981.

It is not a de Polignac number, because 189169143 - 2⁸ = 189168887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189169095 and 189169104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189169147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89863 + ... + 91943.

It is an arithmetic number, because the mean of its divisors is an integer number (15954366).

Almost surely, 2^189169143 is an apocalyptic number.

189169143 is a deficient number, since it is larger than the sum of its proper divisors (66100713).

189169143 is a wasteful number, since it uses less digits than its factorization.

189169143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434.

The product of its digits is 46656, while the sum is 42.

The square root of 189169143 is about 13753.8773805789. The cubic root of 189169143 is about 574.0504989827.

The spelling of 189169143 in words is "one hundred eighty-nine million, one hundred sixty-nine thousand, one hundred forty-three".