513884018369 has 2 divisors, whose sum is σ = 513884018370. Its totient is φ = 513884018368.

The previous prime is 513884018311. The next prime is 513884018419. The reversal of 513884018369 is 963810488315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373244017969 + 140640000400 = 610937^2 + 375020^2 .

It is a cyclic number.

It is not a de Polignac number, because 513884018369 - 2¹⁶ = 513883952833 is a prime.

It is a super-2 number, since 2×513884018369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (513884048369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256942009184 + 256942009185.

It is an arithmetic number, because the mean of its divisors is an integer number (256942009185).

Almost surely, 2^513884018369 is an apocalyptic number.

It is an amenable number.

513884018369 is a deficient number, since it is larger than the sum of its proper divisors (1).

513884018369 is an equidigital number, since it uses as much as digits as its factorization.

513884018369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 513884018369 in words is "five hundred thirteen billion, eight hundred eighty-four million, eighteen thousand, three hundred sixty-nine".