630136513 has 2 divisors, whose sum is σ = 630136514. Its totient is φ = 630136512.

The previous prime is 630136499. The next prime is 630136523. The reversal of 630136513 is 315631036.

630136513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419102784 + 211033729 = 20472^2 + 14527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630136513 is a prime.

It is not a weakly prime, because it can be changed into another prime (630136523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315068256 + 315068257.

It is an arithmetic number, because the mean of its divisors is an integer number (315068257).

Almost surely, 2^630136513 is an apocalyptic number.

It is an amenable number.

630136513 is a deficient number, since it is larger than the sum of its proper divisors (1).

630136513 is an equidigital number, since it uses as much as digits as its factorization.

630136513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 630136513 is about 25102.5200527756. The cubic root of 630136513 is about 857.3238030146.

Adding to 630136513 its reverse (315631036), we get a palindrome (945767549).

The spelling of 630136513 in words is "six hundred thirty million, one hundred thirty-six thousand, five hundred thirteen".