1189643927845 has 8 divisors (see below), whose sum is σ = 1428064488576. Its totient is φ = 951387292176.

The previous prime is 1189643927827. The next prime is 1189643927869. The reversal of 1189643927845 is 5487293469811.

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

It is a cyclic number.

It is not a de Polignac number, because 1189643927845 - 2¹¹ = 1189643925797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40965297 + ... + 40994326.

It is an arithmetic number, because the mean of its divisors is an integer number (178508061072).

Almost surely, 2^{1189643927845} is an apocalyptic number.

It is an amenable number.

1189643927845 is a deficient number, since it is larger than the sum of its proper divisors (238420560731).

1189643927845 is an equidigital number, since it uses as much as digits as its factorization.

1189643927845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81962531.

The product of its digits is 104509440, while the sum is 67.

The spelling of 1189643927845 in words is "one trillion, one hundred eighty-nine billion, six hundred forty-three million, nine hundred twenty-seven thousand, eight hundred forty-five".