9958438630 has 32 divisors (see below), whose sum is σ = 21039610176. Its totient is φ = 3322041984.

The previous prime is 9958438603. The next prime is 9958438643. The reversal of 9958438630 is 368348599.

9958438630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1919889 + ... + 1925068.

It is an arithmetic number, because the mean of its divisors is an integer number (657487818).

Almost surely, 2^9958438630 is an apocalyptic number.

9958438630 is an abundant number, since it is smaller than the sum of its proper divisors (11081171546).

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

9958438630 is a wasteful number, since it uses less digits than its factorization.

9958438630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845008.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 9958438630 is about 99791.9767817032. The cubic root of 9958438630 is about 2151.4458369289.

The spelling of 9958438630 in words is "nine billion, nine hundred fifty-eight million, four hundred thirty-eight thousand, six hundred thirty".