504918643 has 2 divisors, whose sum is σ = 504918644. Its totient is φ = 504918642.

The previous prime is 504918611. The next prime is 504918653. The reversal of 504918643 is 346819405.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 504918643 - 2⁵ = 504918611 is a prime.

It is a super-2 number, since 2×504918643² = 509885672097922898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 504918596 and 504918605.

It is not a weakly prime, because it can be changed into another prime (504918653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252459321 + 252459322.

It is an arithmetic number, because the mean of its divisors is an integer number (252459322).

Almost surely, 2^504918643 is an apocalyptic number.

504918643 is a deficient number, since it is larger than the sum of its proper divisors (1).

504918643 is an equidigital number, since it uses as much as digits as its factorization.

504918643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 504918643 is about 22470.3948118408. The cubic root of 504918643 is about 796.2946577741.

The spelling of 504918643 in words is "five hundred four million, nine hundred eighteen thousand, six hundred forty-three".