1155164260 has 24 divisors (see below), whose sum is σ = 2432731896. Its totient is φ = 460753920.

The previous prime is 1155164239. The next prime is 1155164267. The reversal of 1155164260 is 624615511.

It can be written as a sum of positive squares in 4 ways, for example, as 252004 + 1154912256 = 502^2 + 33984^2 .

It is not an unprimeable number, because it can be changed into a prime (1155164267) 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 7 ways as a sum of consecutive naturals, for example, 74751 + ... + 88870.

It is an arithmetic number, because the mean of its divisors is an integer number (101363829).

Almost surely, 2^1155164260 is an apocalyptic number.

1155164260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155164260 is an abundant number, since it is smaller than the sum of its proper divisors (1277567636).

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

1155164260 is a wasteful number, since it uses less digits than its factorization.

1155164260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163983 (or 163981 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1155164260 is about 33987.7074837359. The cubic root of 1155164260 is about 1049.2554843103.

Adding to 1155164260 its reverse (624615511), we get a palindrome (1779779771).

The spelling of 1155164260 in words is "one billion, one hundred fifty-five million, one hundred sixty-four thousand, two hundred sixty".