1115998884 has 576 divisors, whose sum is σ = 4164206592. Its totient is φ = 251942400.

The previous prime is 1115998837. The next prime is 1115998889. The reversal of 1115998884 is 4888995111.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1115998884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115998889) 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 191 ways as a sum of consecutive naturals, for example, 30162114 + ... + 30162150.

Almost surely, 2^1115998884 is an apocalyptic number.

1115998884 is a gapful number since it is divisible by the number (14) 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 1115998884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2082103296).

1115998884 is an abundant number, since it is smaller than the sum of its proper divisors (3048207708).

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

1115998884 is a wasteful number, since it uses less digits than its factorization.

1115998884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 104 counting only the distinct ones).

The product of its digits is 829440, while the sum is 54.

The square root of 1115998884 is about 33406.5694736829. The cubic root of 1115998884 is about 1037.2606917744.

It can be divided in two parts, 1115 and 998884, that added together give a palindrome (999999).

The spelling of 1115998884 in words is "one billion, one hundred fifteen million, nine hundred ninety-eight thousand, eight hundred eighty-four".