2165143047 has 8 divisors (see below), whose sum is σ = 2957268720. Its totient is φ = 1408223040.

The previous prime is 2165143039. The next prime is 2165143049. The reversal of 2165143047 is 7403415612.

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

It is not a de Polignac number, because 2165143047 - 2³ = 2165143039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2165142999 and 2165143017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165143049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8801272 + ... + 8801517.

It is an arithmetic number, because the mean of its divisors is an integer number (369658590).

Almost surely, 2^2165143047 is an apocalyptic number.

2165143047 is a deficient number, since it is larger than the sum of its proper divisors (792125673).

2165143047 is a wasteful number, since it uses less digits than its factorization.

2165143047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17602833.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 2165143047 is about 46531.0976337331. The cubic root of 2165143047 is about 1293.6859599658.

Adding to 2165143047 its reverse (7403415612), we get a palindrome (9568558659).

The spelling of 2165143047 in words is "two billion, one hundred sixty-five million, one hundred forty-three thousand, forty-seven".