1155144544 has 24 divisors (see below), whose sum is σ = 2290799448. Its totient is φ = 573354240.

The previous prime is 1155144541. The next prime is 1155144547. The reversal of 1155144544 is 4454415511.

It is an interprime number because it is at equal distance from previous prime (1155144541) and next prime (1155144547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155144541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127362 + ... + 136129.

It is an arithmetic number, because the mean of its divisors is an integer number (95449977).

Almost surely, 2^1155144544 is an apocalyptic number.

It is an amenable number.

1155144544 is a deficient number, since it is larger than the sum of its proper divisors (1135654904).

1155144544 is a wasteful number, since it uses less digits than its factorization.

1155144544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263638 (or 263630 counting only the distinct ones).

The product of its digits is 32000, while the sum is 34.

The square root of 1155144544 is about 33987.4174364573. The cubic root of 1155144544 is about 1049.2495148162.

The spelling of 1155144544 in words is "one billion, one hundred fifty-five million, one hundred forty-four thousand, five hundred forty-four".