1155160320 has 72 divisors (see below), whose sum is σ = 3689305536. Its totient is φ = 308041728.

The previous prime is 1155160291. The next prime is 1155160367. The reversal of 1155160320 is 230615511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146572 + ... + 154251.

Almost surely, 2^1155160320 is an apocalyptic number.

1155160320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155160320 is an abundant number, since it is smaller than the sum of its proper divisors (2534145216).

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

1155160320 is an equidigital number, since it uses as much as digits as its factorization.

1155160320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300847 (or 300833 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1155160320 is about 33987.6495215541. The cubic root of 1155160320 is about 1049.2542913858.

Adding to 1155160320 its reverse (230615511), we get a palindrome (1385775831).

The spelling of 1155160320 in words is "one billion, one hundred fifty-five million, one hundred sixty thousand, three hundred twenty".