2165030043 has 64 divisors (see below), whose sum is σ = 3388096512. Its totient is φ = 1216666880.

The previous prime is 2165030039. The next prime is 2165030071. The reversal of 2165030043 is 3400305612.

It is a happy number.

It is not a de Polignac number, because 2165030043 - 2² = 2165030039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2165029995 and 2165030022.

It is not an unprimeable number, because it can be changed into a prime (2165030143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4886980 + ... + 4887422.

It is an arithmetic number, because the mean of its divisors is an integer number (52939008).

Almost surely, 2^2165030043 is an apocalyptic number.

2165030043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2165030043 is a deficient number, since it is larger than the sum of its proper divisors (1223066469).

2165030043 is a wasteful number, since it uses less digits than its factorization.

2165030043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2165030043 is about 46529.8833331871. The cubic root of 2165030043 is about 1293.6634527182.

Adding to 2165030043 its reverse (3400305612), we get a palindrome (5565335655).

The spelling of 2165030043 in words is "two billion, one hundred sixty-five million, thirty thousand, forty-three".