630136393 has 2 divisors, whose sum is σ = 630136394. Its totient is φ = 630136392.

The previous prime is 630136363. The next prime is 630136427. The reversal of 630136393 is 393631036.

It is a happy number.

630136393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (630136427) can be obtained adding 630136393 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429857289 + 200279104 = 20733^2 + 14152^2 .

It is a cyclic number.

It is not a de Polignac number, because 630136393 - 2⁹ = 630135881 is a prime.

It is not a weakly prime, because it can be changed into another prime (630136333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315068196 + 315068197.

It is an arithmetic number, because the mean of its divisors is an integer number (315068197).

Almost surely, 2^630136393 is an apocalyptic number.

It is an amenable number.

630136393 is a deficient number, since it is larger than the sum of its proper divisors (1).

630136393 is an equidigital number, since it uses as much as digits as its factorization.

630136393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 34.

The square root of 630136393 is about 25102.5176625772. The cubic root of 630136393 is about 857.3237485931.

The spelling of 630136393 in words is "six hundred thirty million, one hundred thirty-six thousand, three hundred ninety-three".