1018644981846 has 8 divisors (see below), whose sum is σ = 2037289963704. Its totient is φ = 339548327280.

The previous prime is 1018644981803. The next prime is 1018644981853. The reversal of 1018644981846 is 6481894468101.

It is a sphenic number, since it is the product of 3 distinct primes.

1018644981846 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1018644981846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84887081815 + ... + 84887081826.

It is an arithmetic number, because the mean of its divisors is an integer number (254661245463).

Almost surely, 2^{1018644981846} is an apocalyptic number.

1018644981846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1018644981846 is a wasteful number, since it uses less digits than its factorization.

1018644981846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169774163646.

The product of its (nonzero) digits is 10616832, while the sum is 60.

The spelling of 1018644981846 in words is "one trillion, eighteen billion, six hundred forty-four million, nine hundred eighty-one thousand, eight hundred forty-six".