1155636216 has 96 divisors (see below), whose sum is σ = 3635704800. Its totient is φ = 324760320.

The previous prime is 1155636199. The next prime is 1155636227. The reversal of 1155636216 is 6126365511.

1155636216 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 636 + 2 + 16 = 666.

1155636216 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11950 + ... + 49538.

It is an arithmetic number, because the mean of its divisors is an integer number (37871925).

Almost surely, 2^1155636216 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 1155636216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817852400).

1155636216 is an abundant number, since it is smaller than the sum of its proper divisors (2480068584).

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

1155636216 is a wasteful number, since it uses less digits than its factorization.

1155636216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37669 (or 37662 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 1155636216 is about 33994.6498143458. The cubic root of 1155636216 is about 1049.3983600939.

The spelling of 1155636216 in words is "one billion, one hundred fifty-five million, six hundred thirty-six thousand, two hundred sixteen".