1188284911912 has 48 divisors (see below), whose sum is σ = 2675401211520. Its totient is φ = 492837055200.

The previous prime is 1188284911867. The next prime is 1188284911951. The reversal of 1188284911912 is 2191194828811.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48880414 + ... + 48904717.

It is an arithmetic number, because the mean of its divisors is an integer number (55737525240).

Almost surely, 2^{1188284911912} is an apocalyptic number.

It is an amenable number.

1188284911912 is an abundant number, since it is smaller than the sum of its proper divisors (1487116299608).

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

1188284911912 is a wasteful number, since it uses less digits than its factorization.

1188284911912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97785182 (or 97785171 counting only the distinct ones).

The product of its digits is 663552, while the sum is 55.

The spelling of 1188284911912 in words is "one trillion, one hundred eighty-eight billion, two hundred eighty-four million, nine hundred eleven thousand, nine hundred twelve".