1189920412988 has 24 divisors (see below), whose sum is σ = 2114199838800. Its totient is φ = 585869695488.

The previous prime is 1189920412969. The next prime is 1189920413023. The reversal of 1189920412988 is 8892140299811.

It is a self number, because there is not a number n which added to its sum of digits gives 1189920412988.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 48533 + ... + 1543436.

It is an arithmetic number, because the mean of its divisors is an integer number (88091659950).

Almost surely, 2^{1189920412988} is an apocalyptic number.

It is an amenable number.

1189920412988 is a deficient number, since it is larger than the sum of its proper divisors (924279425812).

1189920412988 is a wasteful number, since it uses less digits than its factorization.

1189920412988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594829 (or 1594827 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 62.

The spelling of 1189920412988 in words is "one trillion, one hundred eighty-nine billion, nine hundred twenty million, four hundred twelve thousand, nine hundred eighty-eight".