1161316260 has 72 divisors (see below), whose sum is σ = 3793640760. Its totient is φ = 285861888.

The previous prime is 1161316259. The next prime is 1161316307. The reversal of 1161316260 is 626131611.

1161316260 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 31 + 626 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 278784 + 1161037476 = 528^2 + 34074^2 .

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 23 ways as a sum of consecutive naturals, for example, 245805 + ... + 250484.

It is an arithmetic number, because the mean of its divisors is an integer number (52689455).

Almost surely, 2^1161316260 is an apocalyptic number.

1161316260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161316260 is an abundant number, since it is smaller than the sum of its proper divisors (2632324500).

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

1161316260 is a wasteful number, since it uses less digits than its factorization.

1161316260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496317 (or 496312 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1161316260 is about 34078.0906155260. The cubic root of 1161316260 is about 1051.1148431013.

Adding to 1161316260 its reverse (626131611), we get a palindrome (1787447871).

The spelling of 1161316260 in words is "one billion, one hundred sixty-one million, three hundred sixteen thousand, two hundred sixty".