1834641563 has 2 divisors, whose sum is σ = 1834641564. Its totient is φ = 1834641562.

The previous prime is 1834641527. The next prime is 1834641643. The reversal of 1834641563 is 3651464381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1834641563 - 2⁶ = 1834641499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1834641563.

It is not a weakly prime, because it can be changed into another prime (1834641763) 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, 917320781 + 917320782.

It is an arithmetic number, because the mean of its divisors is an integer number (917320782).

Almost surely, 2^1834641563 is an apocalyptic number.

1834641563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1834641563 is an equidigital number, since it uses as much as digits as its factorization.

1834641563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 41.

The square root of 1834641563 is about 42832.7160357594. The cubic root of 1834641563 is about 1224.1944587149.

The spelling of 1834641563 in words is "one billion, eight hundred thirty-four million, six hundred forty-one thousand, five hundred sixty-three".