2160210509 has 2 divisors, whose sum is σ = 2160210510. Its totient is φ = 2160210508.

The previous prime is 2160210499. The next prime is 2160210511. The reversal of 2160210509 is 9050120612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1494054409 + 666156100 = 38653^2 + 25810^2 .

It is a cyclic number.

It is not a de Polignac number, because 2160210509 - 2⁸ = 2160210253 is a prime.

Together with 2160210511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2160210709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080105254 + 1080105255.

It is an arithmetic number, because the mean of its divisors is an integer number (1080105255).

Almost surely, 2^2160210509 is an apocalyptic number.

It is an amenable number.

2160210509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2160210509 is an equidigital number, since it uses as much as digits as its factorization.

2160210509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2160210509 is about 46478.0648155665. The cubic root of 2160210509 is about 1292.7028059784.

The spelling of 2160210509 in words is "two billion, one hundred sixty million, two hundred ten thousand, five hundred nine".