2165202443 has 4 divisors (see below), whose sum is σ = 2165368128. Its totient is φ = 2165036760.

The previous prime is 2165202367. The next prime is 2165202461. The reversal of 2165202443 is 3442025612.

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 2165202443 - 2¹⁶ = 2165136907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165202463) 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 3 ways as a sum of consecutive naturals, for example, 61388 + ... + 89993.

It is an arithmetic number, because the mean of its divisors is an integer number (541342032).

Almost surely, 2^2165202443 is an apocalyptic number.

2165202443 is a deficient number, since it is larger than the sum of its proper divisors (165685).

2165202443 is a wasteful number, since it uses less digits than its factorization.

2165202443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165684.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2165202443 is about 46531.7358691893. The cubic root of 2165202443 is about 1293.6977896797.

The spelling of 2165202443 in words is "two billion, one hundred sixty-five million, two hundred two thousand, four hundred forty-three".