1189189243892 has 24 divisors (see below), whose sum is σ = 2254584506496. Its totient is φ = 545570003808.

The previous prime is 1189189243861. The next prime is 1189189243901. The reversal of 1189189243892 is 2983429819811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68461448 + ... + 68478815.

It is an arithmetic number, because the mean of its divisors is an integer number (93941021104).

Almost surely, 2^{1189189243892} is an apocalyptic number.

It is an amenable number.

1189189243892 is a deficient number, since it is larger than the sum of its proper divisors (1065395262604).

1189189243892 is a wasteful number, since it uses less digits than its factorization.

1189189243892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136940447 (or 136940445 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 65.

The spelling of 1189189243892 in words is "one trillion, one hundred eighty-nine billion, one hundred eighty-nine million, two hundred forty-three thousand, eight hundred ninety-two".