1131817260 has 48 divisors (see below), whose sum is σ = 3621816576. Its totient is φ = 258700992.

The previous prime is 1131817229. The next prime is 1131817301. The reversal of 1131817260 is 627181311.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1346982 + ... + 1347821.

It is an arithmetic number, because the mean of its divisors is an integer number (75454512).

Almost surely, 2^1131817260 is an apocalyptic number.

1131817260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131817260 is an abundant number, since it is smaller than the sum of its proper divisors (2489999316).

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

1131817260 is a wasteful number, since it uses less digits than its factorization.

1131817260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694822 (or 2694820 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1131817260 is about 33642.4918815477. The cubic root of 1131817260 is about 1042.1384929689.

Adding to 1131817260 its reverse (627181311), we get a palindrome (1758998571).

The spelling of 1131817260 in words is "one billion, one hundred thirty-one million, eight hundred seventeen thousand, two hundred sixty".