2168213263 has 2 divisors, whose sum is σ = 2168213264. Its totient is φ = 2168213262.

The previous prime is 2168213261. The next prime is 2168213297. The reversal of 2168213263 is 3623128612.

It is an a-pointer prime, because the next prime (2168213297) can be obtained adding 2168213263 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168213263 - 2¹ = 2168213261 is a prime.

It is a super-2 number, since 2×2168213263² = 9402297507698214338, which contains 22 as substring.

Together with 2168213261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168213261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084106631 + 1084106632.

It is an arithmetic number, because the mean of its divisors is an integer number (1084106632).

Almost surely, 2^2168213263 is an apocalyptic number.

2168213263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168213263 is an equidigital number, since it uses as much as digits as its factorization.

2168213263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 2168213263 is about 46564.0769585310. The cubic root of 2168213263 is about 1294.2971619843.

The spelling of 2168213263 in words is "two billion, one hundred sixty-eight million, two hundred thirteen thousand, two hundred sixty-three".