505208930819 has 2 divisors, whose sum is σ = 505208930820. Its totient is φ = 505208930818.

The previous prime is 505208930797. The next prime is 505208930827. The reversal of 505208930819 is 918039802505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505208930819 - 2⁸ = 505208930563 is a prime.

It is a super-2 number, since 2×505208930819² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505208930839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252604465409 + 252604465410.

It is an arithmetic number, because the mean of its divisors is an integer number (252604465410).

Almost surely, 2^505208930819 is an apocalyptic number.

505208930819 is a deficient number, since it is larger than the sum of its proper divisors (1).

505208930819 is an equidigital number, since it uses as much as digits as its factorization.

505208930819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 505208930819 in words is "five hundred five billion, two hundred eight million, nine hundred thirty thousand, eight hundred nineteen".