1189986304 has 120 divisors (see below), whose sum is σ = 2649670688. Its totient is φ = 530841600.

The previous prime is 1189986289. The next prime is 1189986307. The reversal of 1189986304 is 4036899811.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189986307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7880629 + ... + 7880779.

Almost surely, 2^1189986304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189986304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324835344).

1189986304 is an abundant number, since it is smaller than the sum of its proper divisors (1459684384).

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

1189986304 is an equidigital number, since it uses as much as digits as its factorization.

1189986304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 1189986304 is about 34496.1781071469. The cubic root of 1189986304 is about 1059.6944366664.

The spelling of 1189986304 in words is "one billion, one hundred eighty-nine million, nine hundred eighty-six thousand, three hundred four".