9018918436842 has 48 divisors (see below), whose sum is σ = 19743001459272. Its totient is φ = 2975229204480.

The previous prime is 9018918436841. The next prime is 9018918436859. The reversal of 9018918436842 is 2486348198109.

9018918436842 is a `hidden beast` number, since 9 + 0 + 189 + 18 + 436 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6600896546841 + 2418021890001 = 2569221^2 + 1554999^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9018918436842.

It is not an unprimeable number, because it can be changed into a prime (9018918436841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105095992 + ... + 105181772.

Almost surely, 2^{9018918436842} is an apocalyptic number.

9018918436842 is an abundant number, since it is smaller than the sum of its proper divisors (10724083022430).

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

9018918436842 is a wasteful number, since it uses less digits than its factorization.

9018918436842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146103 (or 146100 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 9018918436842 in words is "nine trillion, eighteen billion, nine hundred eighteen million, four hundred thirty-six thousand, eight hundred forty-two".