630234718018 has 8 divisors (see below), whose sum is σ = 948716320140. Its totient is φ = 313995944640.

The previous prime is 630234717989. The next prime is 630234718019. The reversal of 630234718018 is 810817432036.

It can be written as a sum of positive squares in 2 ways, for example, as 621128405689 + 9106312329 = 788117^2 + 95427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (630234718019) 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, 560706483 + ... + 560707606.

Almost surely, 2^630234718018 is an apocalyptic number.

630234718018 is a deficient number, since it is larger than the sum of its proper divisors (318481602122).

630234718018 is a wasteful number, since it uses less digits than its factorization.

630234718018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121414372.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 630234718018 in words is "six hundred thirty billion, two hundred thirty-four million, seven hundred eighteen thousand, eighteen".