630325853 has 4 divisors (see below), whose sum is σ = 630415968. Its totient is φ = 630235740.

The previous prime is 630325849. The next prime is 630325897. The reversal of 630325853 is 358523036.

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.

It is a cyclic number.

It is not a de Polignac number, because 630325853 - 2² = 630325849 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 (630325823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33593 + ... + 48878.

It is an arithmetic number, because the mean of its divisors is an integer number (157603992).

Almost surely, 2^630325853 is an apocalyptic number.

It is an amenable number.

630325853 is a deficient number, since it is larger than the sum of its proper divisors (90115).

630325853 is an equidigital number, since it uses as much as digits as its factorization.

630325853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90114.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 630325853 is about 25106.2911040241. The cubic root of 630325853 is about 857.4096624170.

Adding to 630325853 its reverse (358523036), we get a palindrome (988848889).

The spelling of 630325853 in words is "six hundred thirty million, three hundred twenty-five thousand, eight hundred fifty-three".