513854849 has 2 divisors, whose sum is σ = 513854850. Its totient is φ = 513854848.

The previous prime is 513854839. The next prime is 513854863. The reversal of 513854849 is 948458315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503194624 + 10660225 = 22432^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 513854849 - 2⁴ = 513854833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (513854819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256927424 + 256927425.

It is an arithmetic number, because the mean of its divisors is an integer number (256927425).

Almost surely, 2^513854849 is an apocalyptic number.

It is an amenable number.

513854849 is a deficient number, since it is larger than the sum of its proper divisors (1).

513854849 is an equidigital number, since it uses as much as digits as its factorization.

513854849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 47.

The square root of 513854849 is about 22668.3667034041. The cubic root of 513854849 is about 800.9649029225.

The spelling of 513854849 in words is "five hundred thirteen million, eight hundred fifty-four thousand, eight hundred forty-nine".