505315938 has 16 divisors (see below), whose sum is σ = 1011194496. Its totient is φ = 168344880.

The previous prime is 505315933. The next prime is 505315991. The reversal of 505315938 is 839513505.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 505315896 and 505315905.

It is not an unprimeable number, because it can be changed into a prime (505315931) 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 7 ways as a sum of consecutive naturals, for example, 11281 + ... + 33732.

It is an arithmetic number, because the mean of its divisors is an integer number (63199656).

Almost surely, 2^505315938 is an apocalyptic number.

505315938 is an abundant number, since it is smaller than the sum of its proper divisors (505878558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505315938 is a wasteful number, since it uses less digits than its factorization.

505315938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46889.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 505315938 is about 22479.2334833730. The cubic root of 505315938 is about 796.5034577130.

The spelling of 505315938 in words is "five hundred five million, three hundred fifteen thousand, nine hundred thirty-eight".