9918964836 has 135 divisors (see below), whose sum is σ = 28558492963. Its totient is φ = 2999771280.

The previous prime is 9918964819. The next prime is 9918964903. The reversal of 9918964836 is 6384698199.

It is a happy number.

The square root of 9918964836 is 99594.

It is a perfect power (a square), and thus also a powerful number.

9918964836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 44 ways as a sum of consecutive naturals, for example, 19719361 + ... + 19719863.

Almost surely, 2^9918964836 is an apocalyptic number.

9918964836 is the 99594-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9918964836

9918964836 is an abundant number, since it is smaller than the sum of its proper divisors (18639528127).

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

9918964836 is a wasteful number, since it uses less digits than its factorization.

9918964836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 519 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The cubic root of 9918964836 is about 2148.5994004628.

It can be divided in two parts, 99189 and 64836, that added together give a square (164025 = 405²).

The spelling of 9918964836 in words is "nine billion, nine hundred eighteen million, nine hundred sixty-four thousand, eight hundred thirty-six".