1155233144 has 32 divisors (see below), whose sum is σ = 2434108320. Its totient is φ = 510001536.

The previous prime is 1155233137. The next prime is 1155233153. The reversal of 1155233144 is 4413325511.

It is a super-2 number, since 2×1155233144² = 2669127233992249472, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 239087 + ... + 243870.

It is an arithmetic number, because the mean of its divisors is an integer number (76065885).

Almost surely, 2^1155233144 is an apocalyptic number.

It is an amenable number.

1155233144 is an abundant number, since it is smaller than the sum of its proper divisors (1278875176).

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

1155233144 is a wasteful number, since it uses less digits than its factorization.

1155233144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482999 (or 482995 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 1155233144 is about 33988.7208350064. The cubic root of 1155233144 is about 1049.2763400681.

Adding to 1155233144 its reverse (4413325511), we get a palindrome (5568558655).

The spelling of 1155233144 in words is "one billion, one hundred fifty-five million, two hundred thirty-three thousand, one hundred forty-four".