264995219 has 2 divisors, whose sum is σ = 264995220. Its totient is φ = 264995218.

The previous prime is 264995191. The next prime is 264995287. The reversal of 264995219 is 912599462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264995219 is a prime.

It is a super-2 number, since 2×264995219² = 140444932185715922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264992219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132497609 + 132497610.

It is an arithmetic number, because the mean of its divisors is an integer number (132497610).

Almost surely, 2^264995219 is an apocalyptic number.

264995219 is a deficient number, since it is larger than the sum of its proper divisors (1).

264995219 is an equidigital number, since it uses as much as digits as its factorization.

264995219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 264995219 is about 16278.6737481897. The cubic root of 264995219 is about 642.3119660506.

The spelling of 264995219 in words is "two hundred sixty-four million, nine hundred ninety-five thousand, two hundred nineteen".