1155440244 has 48 divisors (see below), whose sum is σ = 3100834688. Its totient is φ = 328019328.

The previous prime is 1155440219. The next prime is 1155440269. The reversal of 1155440244 is 4420445511.

It is an interprime number because it is at equal distance from previous prime (1155440219) and next prime (1155440269).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30619 + ... + 56994.

Almost surely, 2^1155440244 is an apocalyptic number.

1155440244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1155440244 is an abundant number, since it is smaller than the sum of its proper divisors (1945394444).

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

1155440244 is a wasteful number, since it uses less digits than its factorization.

1155440244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87784 (or 87782 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 1155440244 is about 33991.7672973913. The cubic root of 1155440244 is about 1049.3390379881.

Adding to 1155440244 its reverse (4420445511), we get a palindrome (5575885755).

The spelling of 1155440244 in words is "one billion, one hundred fifty-five million, four hundred forty thousand, two hundred forty-four".