814128563 has 2 divisors, whose sum is σ = 814128564. Its totient is φ = 814128562.

The previous prime is 814128527. The next prime is 814128577. The reversal of 814128563 is 365821418.

814128563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 814128563 - 2¹⁴ = 814112179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (814128863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407064281 + 407064282.

It is an arithmetic number, because the mean of its divisors is an integer number (407064282).

Almost surely, 2^814128563 is an apocalyptic number.

814128563 is a deficient number, since it is larger than the sum of its proper divisors (1).

814128563 is an equidigital number, since it uses as much as digits as its factorization.

814128563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 38.

The square root of 814128563 is about 28532.9382118281. The cubic root of 814128563 is about 933.7508223098.

The spelling of 814128563 in words is "eight hundred fourteen million, one hundred twenty-eight thousand, five hundred sixty-three".