1155044564 has 12 divisors (see below), whose sum is σ = 2022333600. Its totient is φ = 577234968.

The previous prime is 1155044519. The next prime is 1155044633. The reversal of 1155044564 is 4654405511.

It is a congruent number.

It is an unprimeable number.

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, 62654 + ... + 78965.

It is an arithmetic number, because the mean of its divisors is an integer number (168527800).

Almost surely, 2^1155044564 is an apocalyptic number.

It is an amenable number.

1155044564 is a deficient number, since it is larger than the sum of its proper divisors (867289036).

1155044564 is a wasteful number, since it uses less digits than its factorization.

1155044564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143662 (or 143660 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 1155044564 is about 33985.9465661911. The cubic root of 1155044564 is about 1049.2192424161.

The spelling of 1155044564 in words is "one billion, one hundred fifty-five million, forty-four thousand, five hundred sixty-four".