630106108649 has 2 divisors, whose sum is σ = 630106108650. Its totient is φ = 630106108648.

The previous prime is 630106108609. The next prime is 630106108651. The reversal of 630106108649 is 946801601036.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341602843024 + 288503265625 = 584468^2 + 537125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630106108649 is a prime.

Together with 630106108651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (630106108609) 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, 315053054324 + 315053054325.

It is an arithmetic number, because the mean of its divisors is an integer number (315053054325).

Almost surely, 2^630106108649 is an apocalyptic number.

It is an amenable number.

630106108649 is a deficient number, since it is larger than the sum of its proper divisors (1).

630106108649 is an equidigital number, since it uses as much as digits as its factorization.

630106108649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 630106108649 in words is "six hundred thirty billion, one hundred six million, one hundred eight thousand, six hundred forty-nine".