264215219 has 2 divisors, whose sum is σ = 264215220. Its totient is φ = 264215218.

The previous prime is 264215213. The next prime is 264215221. The reversal of 264215219 is 912512462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264215219 - 2²⁰ = 263166643 is a prime.

It is a super-2 number, since 2×264215219² = 139619363902435922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 264215221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264215213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132107609 + 132107610.

It is an arithmetic number, because the mean of its divisors is an integer number (132107610).

Almost surely, 2^264215219 is an apocalyptic number.

264215219 is a deficient number, since it is larger than the sum of its proper divisors (1).

264215219 is an equidigital number, since it uses as much as digits as its factorization.

264215219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 264215219 is about 16254.6983669338. The cubic root of 264215219 is about 641.6811424706.

The spelling of 264215219 in words is "two hundred sixty-four million, two hundred fifteen thousand, two hundred nineteen".