143688163 has 4 divisors (see below), whose sum is σ = 145656568. Its totient is φ = 141719760.

The previous prime is 143688161. The next prime is 143688173. The reversal of 143688163 is 361886341.

It is a happy number.

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 143688163 - 2¹ = 143688161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143688161) 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, 984093 + ... + 984238.

It is an arithmetic number, because the mean of its divisors is an integer number (36414142).

Almost surely, 2^143688163 is an apocalyptic number.

143688163 is a deficient number, since it is larger than the sum of its proper divisors (1968405).

143688163 is an equidigital number, since it uses as much as digits as its factorization.

143688163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968404.

The product of its digits is 82944, while the sum is 40.

The square root of 143688163 is about 11986.9997497289. Note that the first 3 decimals coincide. The cubic root of 143688163 is about 523.7696516342.

The spelling of 143688163 in words is "one hundred forty-three million, six hundred eighty-eight thousand, one hundred sixty-three".