1813031944463 has 2 divisors, whose sum is σ = 1813031944464. Its totient is φ = 1813031944462.

The previous prime is 1813031944447. The next prime is 1813031944483. The reversal of 1813031944463 is 3644491303181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1813031944463 - 2⁴ = 1813031944447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1813031944483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906515972231 + 906515972232.

It is an arithmetic number, because the mean of its divisors is an integer number (906515972232).

Almost surely, 2^{1813031944463} is an apocalyptic number.

1813031944463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813031944463 is an equidigital number, since it uses as much as digits as its factorization.

1813031944463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 1813031944463 in words is "one trillion, eight hundred thirteen billion, thirty-one million, nine hundred forty-four thousand, four hundred sixty-three".