630328818 has 64 divisors (see below), whose sum is σ = 1484356608. Its totient is φ = 174674880.

The previous prime is 630328817. The next prime is 630328837. The reversal of 630328818 is 818823036.

It is not an unprimeable number, because it can be changed into a prime (630328817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911853 + ... + 912543.

It is an arithmetic number, because the mean of its divisors is an integer number (23193072).

Almost surely, 2^630328818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630328818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742178304).

630328818 is an abundant number, since it is smaller than the sum of its proper divisors (854027790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630328818 is a wasteful number, since it uses less digits than its factorization.

630328818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 630328818 is about 25106.3501528996. The cubic root of 630328818 is about 857.4110068093.

The spelling of 630328818 in words is "six hundred thirty million, three hundred twenty-eight thousand, eight hundred eighteen".