1115513244 has 18 divisors (see below), whose sum is σ = 2819769680. Its totient is φ = 371837736.

The previous prime is 1115513233. The next prime is 1115513261. The reversal of 1115513244 is 4423155111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15493204 + ... + 15493275.

Almost surely, 2^1115513244 is an apocalyptic number.

It is an amenable number.

1115513244 is an abundant number, since it is smaller than the sum of its proper divisors (1704256436).

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

1115513244 is a wasteful number, since it uses less digits than its factorization.

1115513244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30986489 (or 30986484 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1115513244 is about 33399.3000525460. The cubic root of 1115513244 is about 1037.1102112270.

Adding to 1115513244 its reverse (4423155111), we get a palindrome (5538668355).

The spelling of 1115513244 in words is "one billion, one hundred fifteen million, five hundred thirteen thousand, two hundred forty-four".