163745143 has 4 divisors (see below), whose sum is σ = 166834728. Its totient is φ = 160655560.

The previous prime is 163745129. The next prime is 163745147. The reversal of 163745143 is 341547361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341547361 = 18481².

It is a cyclic number.

It is not a de Polignac number, because 163745143 - 2⁹ = 163744631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163745099 and 163745108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163745147) 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, 1544713 + ... + 1544818.

It is an arithmetic number, because the mean of its divisors is an integer number (41708682).

Almost surely, 2^163745143 is an apocalyptic number.

163745143 is a deficient number, since it is larger than the sum of its proper divisors (3089585).

163745143 is an equidigital number, since it uses as much as digits as its factorization.

163745143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3089584.

The product of its digits is 30240, while the sum is 34.

The square root of 163745143 is about 12796.2941119685. The cubic root of 163745143 is about 547.0866815163.

The spelling of 163745143 in words is "one hundred sixty-three million, seven hundred forty-five thousand, one hundred forty-three".