1188211050 has 144 divisors (see below), whose sum is σ = 3587770368. Its totient is φ = 279734400.

The previous prime is 1188211049. The next prime is 1188211091. The reversal of 1188211050 is 501128811.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130135 + ... + 138965.

It is an arithmetic number, because the mean of its divisors is an integer number (24915072).

Almost surely, 2^1188211050 is an apocalyptic number.

1188211050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1188211050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1793885184).

1188211050 is an abundant number, since it is smaller than the sum of its proper divisors (2399559318).

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

1188211050 is a wasteful number, since it uses less digits than its factorization.

1188211050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8885 (or 8877 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The square root of 1188211050 is about 34470.4373340403. The cubic root of 1188211050 is about 1059.1672140573.

Adding to 1188211050 its reverse (501128811), we get a palindrome (1689339861).

The spelling of 1188211050 in words is "one billion, one hundred eighty-eight million, two hundred eleven thousand, fifty".