1189818449000 has 32 divisors (see below), whose sum is σ = 2784175173000. Its totient is φ = 475927379200.

The previous prime is 1189818448963. The next prime is 1189818449009. The reversal of 1189818449000 is 9448189811.

It can be written as a sum of positive squares in 4 ways, for example, as 167119075204 + 1022699373796 = 408802^2 + 1011286^2 .

It is not an unprimeable number, because it can be changed into a prime (1189818449009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594908225 + ... + 594910224.

Almost surely, 2^{1189818449000} is an apocalyptic number.

1189818449000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1189818449000 is an abundant number, since it is smaller than the sum of its proper divisors (1594356724000).

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

1189818449000 is a wasteful number, since it uses less digits than its factorization.

1189818449000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189818470 (or 1189818456 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 53.

The spelling of 1189818449000 in words is "one trillion, one hundred eighty-nine billion, eight hundred eighteen million, four hundred forty-nine thousand".