9818955216 has 320 divisors, whose sum is σ = 33389608960. Its totient is φ = 2704181760.

The previous prime is 9818955203. The next prime is 9818955229. The reversal of 9818955216 is 6125598189.

9818955216 is a `hidden beast` number, since 9 + 8 + 1 + 89 + 552 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (9818955203) and next prime (9818955229).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14209431 + ... + 14210121.

It is an arithmetic number, because the mean of its divisors is an integer number (104342528).

Almost surely, 2^9818955216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9818955216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16694804480).

9818955216 is an abundant number, since it is smaller than the sum of its proper divisors (23570653744).

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

9818955216 is a wasteful number, since it uses less digits than its factorization.

9818955216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 867 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 54.

The square root of 9818955216 is about 99090.6414148178. The cubic root of 9818955216 is about 2141.3537897985.

The spelling of 9818955216 in words is "nine billion, eight hundred eighteen million, nine hundred fifty-five thousand, two hundred sixteen".