1115202816 has 432 divisors, whose sum is σ = 4124824704. Its totient is φ = 292626432.

The previous prime is 1115202791. The next prime is 1115202821. The reversal of 1115202816 is 6182025111.

1115202816 is a `hidden beast` number, since 111 + 520 + 28 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1115202816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5660830 + ... + 5661026.

Almost surely, 2^1115202816 is an apocalyptic number.

1115202816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115202816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062412352).

1115202816 is an abundant number, since it is smaller than the sum of its proper divisors (3009621888).

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

1115202816 is an equidigital number, since it uses as much as digits as its factorization.

1115202816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 1115202816 is about 33394.6525060525. The cubic root of 1115202816 is about 1037.0139990367.

Adding to 1115202816 its reverse (6182025111), we get a palindrome (7297227927).

The spelling of 1115202816 in words is "one billion, one hundred fifteen million, two hundred two thousand, eight hundred sixteen".