630316853 has 4 divisors (see below), whose sum is σ = 631858380. Its totient is φ = 628775328.

The previous prime is 630316787. The next prime is 630316873. The reversal of 630316853 is 358613036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238949764 + 391367089 = 15458^2 + 19783^2 .

It is a cyclic number.

It is not a de Polignac number, because 630316853 - 2⁸ = 630316597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630316873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770150 + ... + 770967.

It is an arithmetic number, because the mean of its divisors is an integer number (157964595).

Almost surely, 2^630316853 is an apocalyptic number.

It is an amenable number.

630316853 is a deficient number, since it is larger than the sum of its proper divisors (1541527).

630316853 is a wasteful number, since it uses less digits than its factorization.

630316853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541526.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 630316853 is about 25106.1118654403. Note that the first 3 decimals coincide. The cubic root of 630316853 is about 857.4055816051.

Adding to 630316853 its reverse (358613036), we get a palindrome (988929889).

The spelling of 630316853 in words is "six hundred thirty million, three hundred sixteen thousand, eight hundred fifty-three".