513339913 has 2 divisors, whose sum is σ = 513339914. Its totient is φ = 513339912.

The previous prime is 513339899. The next prime is 513339947. The reversal of 513339913 is 319933315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471193849 + 42146064 = 21707^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 513339913 - 2¹⁷ = 513208841 is a prime.

It is not a weakly prime, because it can be changed into another prime (513339413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256669956 + 256669957.

It is an arithmetic number, because the mean of its divisors is an integer number (256669957).

Almost surely, 2^513339913 is an apocalyptic number.

It is an amenable number.

513339913 is a deficient number, since it is larger than the sum of its proper divisors (1).

513339913 is an equidigital number, since it uses as much as digits as its factorization.

513339913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32805, while the sum is 37.

The square root of 513339913 is about 22657.0058260133. The cubic root of 513339913 is about 800.6972634572.

The spelling of 513339913 in words is "five hundred thirteen million, three hundred thirty-nine thousand, nine hundred thirteen".