9955618918 has 16 divisors (see below), whose sum is σ = 17082416160. Its totient is φ = 4262783616.

The previous prime is 9955618859. The next prime is 9955618919. The reversal of 9955618918 is 8198165599.

It is a super-2 number, since 2×9955618918² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955618919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310003 + ... + 340606.

It is an arithmetic number, because the mean of its divisors is an integer number (1067651010).

Almost surely, 2^9955618918 is an apocalyptic number.

9955618918 is a deficient number, since it is larger than the sum of its proper divisors (7126797242).

9955618918 is a wasteful number, since it uses less digits than its factorization.

9955618918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651711.

The product of its digits is 6998400, while the sum is 61.

The square root of 9955618918 is about 99777.8478320714. The cubic root of 9955618918 is about 2151.2427585639.

The spelling of 9955618918 in words is "nine billion, nine hundred fifty-five million, six hundred eighteen thousand, nine hundred eighteen".