1155330144 has 72 divisors (see below), whose sum is σ = 3365637912. Its totient is φ = 375713280.

The previous prime is 1155330133. The next prime is 1155330173. The reversal of 1155330144 is 4410335511.

It is a happy number.

1155330144 is a `hidden beast` number, since 115 + 533 + 0 + 14 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 37114 + ... + 60729.

It is an arithmetic number, because the mean of its divisors is an integer number (46744971).

Almost surely, 2^1155330144 is an apocalyptic number.

It is an amenable number.

1155330144 is an abundant number, since it is smaller than the sum of its proper divisors (2210307768).

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

1155330144 is a wasteful number, since it uses less digits than its factorization.

1155330144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97900 (or 97889 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1155330144 is about 33990.1477490169. The cubic root of 1155330144 is about 1049.3057069992.

Adding to 1155330144 its reverse (4410335511), we get a palindrome (5565665655).

The spelling of 1155330144 in words is "one billion, one hundred fifty-five million, three hundred thirty thousand, one hundred forty-four".