630358849 has 4 divisors (see below), whose sum is σ = 630431680. Its totient is φ = 630286020.

The previous prime is 630358843. The next prime is 630358853. The reversal of 630358849 is 948853036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630358849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630358799 and 630358808.

It is not an unprimeable number, because it can be changed into a prime (630358843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21357 + ... + 41434.

It is an arithmetic number, because the mean of its divisors is an integer number (157607920).

Almost surely, 2^630358849 is an apocalyptic number.

It is an amenable number.

630358849 is a deficient number, since it is larger than the sum of its proper divisors (72831).

630358849 is a wasteful number, since it uses less digits than its factorization.

630358849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72830.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 630358849 is about 25106.9482215581. The cubic root of 630358849 is about 857.4246232480.

The spelling of 630358849 in words is "six hundred thirty million, three hundred fifty-eight thousand, eight hundred forty-nine".