2165143045 has 32 divisors (see below), whose sum is σ = 2903040000. Its totient is φ = 1539197184.

The previous prime is 2165143039. The next prime is 2165143049. The reversal of 2165143045 is 5403415612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2165143045 - 2³ = 2165143037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2165142998 and 2165143016.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 720456 + ... + 723454.

It is an arithmetic number, because the mean of its divisors is an integer number (90720000).

Almost surely, 2^2165143045 is an apocalyptic number.

It is an amenable number.

2165143045 is a deficient number, since it is larger than the sum of its proper divisors (737896955).

2165143045 is a wasteful number, since it uses less digits than its factorization.

2165143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2165143045 is about 46531.0976122421. The cubic root of 2165143045 is about 1293.6859595674.

Adding to 2165143045 its reverse (5403415612), we get a palindrome (7568558657).

The spelling of 2165143045 in words is "two billion, one hundred sixty-five million, one hundred forty-three thousand, forty-five".