509349193 has 2 divisors, whose sum is σ = 509349194. Its totient is φ = 509349192.

The previous prime is 509349187. The next prime is 509349227. The reversal of 509349193 is 391943905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491641929 + 17707264 = 22173^2 + 4208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509349193 is a prime.

It is not a weakly prime, because it can be changed into another prime (509349143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254674596 + 254674597.

It is an arithmetic number, because the mean of its divisors is an integer number (254674597).

Almost surely, 2^509349193 is an apocalyptic number.

It is an amenable number.

509349193 is a deficient number, since it is larger than the sum of its proper divisors (1).

509349193 is an equidigital number, since it uses as much as digits as its factorization.

509349193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 509349193 is about 22568.7658723290. The cubic root of 509349193 is about 798.6169818078.

The spelling of 509349193 in words is "five hundred nine million, three hundred forty-nine thousand, one hundred ninety-three".