264219863 has 2 divisors, whose sum is σ = 264219864. Its totient is φ = 264219862.

The previous prime is 264219859. The next prime is 264219869. The reversal of 264219863 is 368912462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264219863 - 2² = 264219859 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264219863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264219869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132109931 + 132109932.

It is an arithmetic number, because the mean of its divisors is an integer number (132109932).

Almost surely, 2^264219863 is an apocalyptic number.

264219863 is a deficient number, since it is larger than the sum of its proper divisors (1).

264219863 is an equidigital number, since it uses as much as digits as its factorization.

264219863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 264219863 is about 16254.8412173112. The cubic root of 264219863 is about 641.6849019686.

The spelling of 264219863 in words is "two hundred sixty-four million, two hundred nineteen thousand, eight hundred sixty-three".