1284873563 has 2 divisors, whose sum is σ = 1284873564. Its totient is φ = 1284873562.

The previous prime is 1284873547. The next prime is 1284873571. The reversal of 1284873563 is 3653784821.

It is a strong prime.

It is an emirp because it is prime and its reverse (3653784821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1284873563 - 2⁴ = 1284873547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1284863563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642436781 + 642436782.

It is an arithmetic number, because the mean of its divisors is an integer number (642436782).

Almost surely, 2^1284873563 is an apocalyptic number.

1284873563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284873563 is an equidigital number, since it uses as much as digits as its factorization.

1284873563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 47.

The square root of 1284873563 is about 35845.1330448082. The cubic root of 1284873563 is about 1087.1433102999.

The spelling of 1284873563 in words is "one billion, two hundred eighty-four million, eight hundred seventy-three thousand, five hundred sixty-three".