503345138 has 16 divisors (see below), whose sum is σ = 773747520. Its totient is φ = 245502576.

The previous prime is 503345123. The next prime is 503345177. The reversal of 503345138 is 831543305.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4433 + ... + 32036.

It is an arithmetic number, because the mean of its divisors is an integer number (48359220).

Almost surely, 2^503345138 is an apocalyptic number.

503345138 is a deficient number, since it is larger than the sum of its proper divisors (270402382).

503345138 is a wasteful number, since it uses less digits than its factorization.

503345138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36641.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 503345138 is about 22435.3546439543. The cubic root of 503345138 is about 795.4666184648.

The spelling of 503345138 in words is "five hundred three million, three hundred forty-five thousand, one hundred thirty-eight".