1188396216 has 96 divisors (see below), whose sum is σ = 3753516000. Its totient is φ = 339534720.

The previous prime is 1188396151. The next prime is 1188396217. The reversal of 1188396216 is 6126938811.

1188396216 is a `hidden beast` number, since 1 + 18 + 8 + 3 + 9 + 621 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188396217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 636 + ... + 48756.

It is an arithmetic number, because the mean of its divisors is an integer number (39099125).

Almost surely, 2^1188396216 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 1188396216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1876758000).

1188396216 is an abundant number, since it is smaller than the sum of its proper divisors (2565119784).

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

1188396216 is a wasteful number, since it uses less digits than its factorization.

1188396216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48154 (or 48133 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1188396216 is about 34473.1230961165. The cubic root of 1188396216 is about 1059.2222299766. Note that the first 5 decimals are identical.

The spelling of 1188396216 in words is "one billion, one hundred eighty-eight million, three hundred ninety-six thousand, two hundred sixteen".