1218962108866 has 8 divisors (see below), whose sum is σ = 1837108771344. Its totient is φ = 606592518420.

The previous prime is 1218962108831. The next prime is 1218962108887. The reversal of 1218962108866 is 6688012698121.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1218962108866.

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, 1444267480 + ... + 1444268323.

It is an arithmetic number, because the mean of its divisors is an integer number (229638596418).

Almost surely, 2^{1218962108866} is an apocalyptic number.

1218962108866 is a deficient number, since it is larger than the sum of its proper divisors (618146662478).

1218962108866 is a wasteful number, since it uses less digits than its factorization.

1218962108866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888536016.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The spelling of 1218962108866 in words is "one trillion, two hundred eighteen billion, nine hundred sixty-two million, one hundred eight thousand, eight hundred sixty-six".