630806193673 has 2 divisors, whose sum is σ = 630806193674. Its totient is φ = 630806193672.

The previous prime is 630806193643. The next prime is 630806193691. The reversal of 630806193673 is 376391608036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417202311744 + 213603881929 = 645912^2 + 462173^2 .

It is a cyclic number.

It is not a de Polignac number, because 630806193673 - 2¹³ = 630806185481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 630806193673.

It is not a weakly prime, because it can be changed into another prime (630806193623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315403096836 + 315403096837.

It is an arithmetic number, because the mean of its divisors is an integer number (315403096837).

Almost surely, 2^630806193673 is an apocalyptic number.

It is an amenable number.

630806193673 is a deficient number, since it is larger than the sum of its proper divisors (1).

630806193673 is an equidigital number, since it uses as much as digits as its factorization.

630806193673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 630806193673 in words is "six hundred thirty billion, eight hundred six million, one hundred ninety-three thousand, six hundred seventy-three".