1218442798842 has 32 divisors (see below), whose sum is σ = 2442710442240. Its totient is φ = 405177527040.

The previous prime is 1218442798817. The next prime is 1218442798871. The reversal of 1218442798842 is 2488972448121.

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 15 ways as a sum of consecutive naturals, for example, 6639759 + ... + 6820797.

It is an arithmetic number, because the mean of its divisors is an integer number (76334701320).

Almost surely, 2^{1218442798842} is an apocalyptic number.

1218442798842 is an abundant number, since it is smaller than the sum of its proper divisors (1224267643398).

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

1218442798842 is a wasteful number, since it uses less digits than its factorization.

1218442798842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183718.

The product of its digits is 16515072, while the sum is 60.

The spelling of 1218442798842 in words is "one trillion, two hundred eighteen billion, four hundred forty-two million, seven hundred ninety-eight thousand, eight hundred forty-two".