630249498668389 has 2 divisors, whose sum is σ = 630249498668390. Its totient is φ = 630249498668388.

The previous prime is 630249498668219. The next prime is 630249498668399. The reversal of 630249498668389 is 983866894942036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454760316512100 + 175489182156289 = 21325110^2 + 13247233^2 .

It is a cyclic number.

It is not a de Polignac number, because 630249498668389 - 2³³ = 630240908733797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630249498668399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315124749334194 + 315124749334195.

It is an arithmetic number, because the mean of its divisors is an integer number (315124749334195).

Almost surely, 2^{630249498668389} is an apocalyptic number.

It is an amenable number.

630249498668389 is a deficient number, since it is larger than the sum of its proper divisors (1).

630249498668389 is an equidigital number, since it uses as much as digits as its factorization.

630249498668389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23219011584, while the sum is 85.

The spelling of 630249498668389 in words is "six hundred thirty trillion, two hundred forty-nine billion, four hundred ninety-eight million, six hundred sixty-eight thousand, three hundred eighty-nine".