509963138 has 8 divisors (see below), whose sum is σ = 779377788. Its totient is φ = 250170544.

The previous prime is 509963131. The next prime is 509963141. The reversal of 509963138 is 831369905.

It can be written as a sum of positive squares in 2 ways, for example, as 503239489 + 6723649 = 22433^2 + 2593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (509963131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2405381 + ... + 2405592.

Almost surely, 2^509963138 is an apocalyptic number.

509963138 is a deficient number, since it is larger than the sum of its proper divisors (269414650).

509963138 is a wasteful number, since it uses less digits than its factorization.

509963138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811028.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 509963138 is about 22582.3634281268. The cubic root of 509963138 is about 798.9377244627.

The spelling of 509963138 in words is "five hundred nine million, nine hundred sixty-three thousand, one hundred thirty-eight".