505384538 has 16 divisors (see below), whose sum is σ = 766561536. Its totient is φ = 249871440.

The previous prime is 505384519. The next prime is 505384571. The reversal of 505384538 is 835483505.

It is a junction number, because it is equal to n+sod(n) for n = 505384495 and 505384504.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 186320 + ... + 189012.

It is an arithmetic number, because the mean of its divisors is an integer number (47910096).

Almost surely, 2^505384538 is an apocalyptic number.

505384538 is a deficient number, since it is larger than the sum of its proper divisors (261176998).

505384538 is a wasteful number, since it uses less digits than its factorization.

505384538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709.

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 505384538 is about 22480.7592843302. The cubic root of 505384538 is about 796.5394996297.

The spelling of 505384538 in words is "five hundred five million, three hundred eighty-four thousand, five hundred thirty-eight".