505163393 has 12 divisors (see below), whose sum is σ = 618568560. Its totient is φ = 410207112.

The previous prime is 505163341. The next prime is 505163413. The reversal of 505163393 is 393361505.

It is not a de Polignac number, because 505163393 - 2¹⁸ = 504901249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505163333) 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 in 11 ways as a sum of consecutive naturals, for example, 270371 + ... + 272232.

It is an arithmetic number, because the mean of its divisors is an integer number (51547380).

Almost surely, 2^505163393 is an apocalyptic number.

It is an amenable number.

505163393 is a deficient number, since it is larger than the sum of its proper divisors (113405167).

505163393 is a wasteful number, since it uses less digits than its factorization.

505163393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542636 (or 542629 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 35.

The square root of 505163393 is about 22475.8402067642. The cubic root of 505163393 is about 796.4233000405.

The spelling of 505163393 in words is "five hundred five million, one hundred sixty-three thousand, three hundred ninety-three".