2163857143 has 4 divisors (see below), whose sum is σ = 2472979600. Its totient is φ = 1854734688.

The previous prime is 2163857141. The next prime is 2163857153. The reversal of 2163857143 is 3417583612.

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 2163857143 - 2¹ = 2163857141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2163857096 and 2163857105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163857141) 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 3 ways as a sum of consecutive naturals, for example, 154561218 + ... + 154561231.

It is an arithmetic number, because the mean of its divisors is an integer number (618244900).

Almost surely, 2^2163857143 is an apocalyptic number.

2163857143 is a deficient number, since it is larger than the sum of its proper divisors (309122457).

2163857143 is an equidigital number, since it uses as much as digits as its factorization.

2163857143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309122456.

The product of its digits is 120960, while the sum is 40.

The square root of 2163857143 is about 46517.2778975726. The cubic root of 2163857143 is about 1293.4297974616.

The spelling of 2163857143 in words is "two billion, one hundred sixty-three million, eight hundred fifty-seven thousand, one hundred forty-three".