630815000909 has 2 divisors, whose sum is σ = 630815000910. Its totient is φ = 630815000908.

The previous prime is 630815000891. The next prime is 630815000929. The reversal of 630815000909 is 909000518036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596655829225 + 34159171684 = 772435^2 + 184822^2 .

It is a cyclic number.

It is not a de Polignac number, because 630815000909 - 2²⁰ = 630813952333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630815000929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315407500454 + 315407500455.

It is an arithmetic number, because the mean of its divisors is an integer number (315407500455).

Almost surely, 2^630815000909 is an apocalyptic number.

It is an amenable number.

630815000909 is a deficient number, since it is larger than the sum of its proper divisors (1).

630815000909 is an equidigital number, since it uses as much as digits as its factorization.

630815000909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 630815000909 in words is "six hundred thirty billion, eight hundred fifteen million, nine hundred nine", and thus it is an aban number.