509534311849 has 2 divisors, whose sum is σ = 509534311850. Its totient is φ = 509534311848.

The previous prime is 509534311817. The next prime is 509534311907. The reversal of 509534311849 is 948113435905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289155703824 + 220378608025 = 537732^2 + 469445^2 .

It is a cyclic number.

It is not a de Polignac number, because 509534311849 - 2⁵ = 509534311817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 509534311796 and 509534311805.

It is not a weakly prime, because it can be changed into another prime (509534311249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254767155924 + 254767155925.

It is an arithmetic number, because the mean of its divisors is an integer number (254767155925).

Almost surely, 2^509534311849 is an apocalyptic number.

It is an amenable number.

509534311849 is a deficient number, since it is larger than the sum of its proper divisors (1).

509534311849 is an equidigital number, since it uses as much as digits as its factorization.

509534311849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 509534311849 in words is "five hundred nine billion, five hundred thirty-four million, three hundred eleven thousand, eight hundred forty-nine".