630318869 has 2 divisors, whose sum is σ = 630318870. Its totient is φ = 630318868.

The previous prime is 630318851. The next prime is 630318919. The reversal of 630318869 is 968813036.

630318869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619362769 + 10956100 = 24887^2 + 3310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630318869 is a prime.

It is a super-2 number, since 2×630318869² = 794603753234878322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630317869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315159434 + 315159435.

It is an arithmetic number, because the mean of its divisors is an integer number (315159435).

Almost surely, 2^630318869 is an apocalyptic number.

It is an amenable number.

630318869 is a deficient number, since it is larger than the sum of its proper divisors (1).

630318869 is an equidigital number, since it uses as much as digits as its factorization.

630318869 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 square root of 630318869 is about 25106.1520149943. The cubic root of 630318869 is about 857.4064957104.

The spelling of 630318869 in words is "six hundred thirty million, three hundred eighteen thousand, eight hundred sixty-nine".