509243195 has 16 divisors (see below), whose sum is σ = 626165760. Its totient is φ = 397371744.

The previous prime is 509243191. The next prime is 509243197. The reversal of 509243195 is 591342905.

It is a cyclic number.

It is not a de Polignac number, because 509243195 - 2² = 509243191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (509243191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232616 + ... + 234794.

It is an arithmetic number, because the mean of its divisors is an integer number (39135360).

Almost surely, 2^509243195 is an apocalyptic number.

509243195 is a deficient number, since it is larger than the sum of its proper divisors (116922565).

509243195 is a wasteful number, since it uses less digits than its factorization.

509243195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 509243195 is about 22566.4174161518. The cubic root of 509243195 is about 798.5615792949.

The spelling of 509243195 in words is "five hundred nine million, two hundred forty-three thousand, one hundred ninety-five".