1131562660 has 12 divisors (see below), whose sum is σ = 2376281628. Its totient is φ = 452625056.

The previous prime is 1131562639. The next prime is 1131562661. The reversal of 1131562660 is 662651311.

It can be written as a sum of positive squares in 2 ways, for example, as 141705216 + 989857444 = 11904^2 + 31462^2 .

It is not an unprimeable number, because it can be changed into a prime (1131562661) 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 3 ways as a sum of consecutive naturals, for example, 28289047 + ... + 28289086.

It is an arithmetic number, because the mean of its divisors is an integer number (198023469).

Almost surely, 2^1131562660 is an apocalyptic number.

1131562660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131562660 is an abundant number, since it is smaller than the sum of its proper divisors (1244718968).

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

1131562660 is a wasteful number, since it uses less digits than its factorization.

1131562660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56578142 (or 56578140 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1131562660 is about 33638.7077635274. The cubic root of 1131562660 is about 1042.0603447945.

The spelling of 1131562660 in words is "one billion, one hundred thirty-one million, five hundred sixty-two thousand, six hundred sixty".