1113275844 has 72 divisors (see below), whose sum is σ = 2916705792. Its totient is φ = 357661440.

The previous prime is 1113275843. The next prime is 1113275851. The reversal of 1113275844 is 4485723111.

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

It is a junction number, because it is equal to n+sod(n) for n = 1113275799 and 1113275808.

It is not an unprimeable number, because it can be changed into a prime (1113275843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291612 + ... + 295404.

Almost surely, 2^1113275844 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 1113275844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458352896).

1113275844 is an abundant number, since it is smaller than the sum of its proper divisors (1803429948).

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

1113275844 is a wasteful number, since it uses less digits than its factorization.

1113275844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097 (or 4092 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1113275844 is about 33365.7885265731. The cubic root of 1113275844 is about 1036.4163651423.

Adding to 1113275844 its reverse (4485723111), we get a palindrome (5598998955).

The spelling of 1113275844 in words is "one billion, one hundred thirteen million, two hundred seventy-five thousand, eight hundred forty-four".