503949918 has 16 divisors (see below), whose sum is σ = 1051721856. Its totient is φ = 160679640.

The previous prime is 503949913. The next prime is 503949923. The reversal of 503949918 is 819949305.

It is an interprime number because it is at equal distance from previous prime (503949913) and next prime (503949923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503949913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1825768 + ... + 1826043.

It is an arithmetic number, because the mean of its divisors is an integer number (65732616).

Almost surely, 2^503949918 is an apocalyptic number.

503949918 is an abundant number, since it is smaller than the sum of its proper divisors (547771938).

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

503949918 is a wasteful number, since it uses less digits than its factorization.

503949918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651839.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 503949918 is about 22448.8288781397. The cubic root of 503949918 is about 795.7850810311.

The spelling of 503949918 in words is "five hundred three million, nine hundred forty-nine thousand, nine hundred eighteen".