481663643 has 2 divisors, whose sum is σ = 481663644. Its totient is φ = 481663642.

The previous prime is 481663607. The next prime is 481663673. The reversal of 481663643 is 346366184.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 481663643 - 2⁸ = 481663387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481663643.

It is not a weakly prime, because it can be changed into another prime (481663673) 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, 240831821 + 240831822.

It is an arithmetic number, because the mean of its divisors is an integer number (240831822).

Almost surely, 2^481663643 is an apocalyptic number.

481663643 is a deficient number, since it is larger than the sum of its proper divisors (1).

481663643 is an equidigital number, since it uses as much as digits as its factorization.

481663643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

The square root of 481663643 is about 21946.8367424556. The cubic root of 481663643 is about 783.8770604769.

The spelling of 481663643 in words is "four hundred eighty-one million, six hundred sixty-three thousand, six hundred forty-three".