513697189 has 2 divisors, whose sum is σ = 513697190. Its totient is φ = 513697188.

The previous prime is 513697133. The next prime is 513697193. The reversal of 513697189 is 981796315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452200225 + 61496964 = 21265^2 + 7842^2 .

It is a cyclic number.

It is not a de Polignac number, because 513697189 - 2¹⁹ = 513172901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513697199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256848594 + 256848595.

It is an arithmetic number, because the mean of its divisors is an integer number (256848595).

Almost surely, 2^513697189 is an apocalyptic number.

It is an amenable number.

513697189 is a deficient number, since it is larger than the sum of its proper divisors (1).

513697189 is an equidigital number, since it uses as much as digits as its factorization.

513697189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 49.

The square root of 513697189 is about 22664.8889033236. Note that the first 3 decimals coincide. The cubic root of 513697189 is about 800.8829776836.

The spelling of 513697189 in words is "five hundred thirteen million, six hundred ninety-seven thousand, one hundred eighty-nine".