1131668539 has 8 divisors (see below), whose sum is σ = 1169456112. Its totient is φ = 1094402400.

The previous prime is 1131668533. The next prime is 1131668599. The reversal of 1131668539 is 9358661311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131668539 - 2⁵ = 1131668507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131668495 and 1131668504.

It is not an unprimeable number, because it can be changed into a prime (1131668533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125944 + ... + 134629.

It is an arithmetic number, because the mean of its divisors is an integer number (146182014).

Almost surely, 2^1131668539 is an apocalyptic number.

1131668539 is a deficient number, since it is larger than the sum of its proper divisors (37787573).

1131668539 is a wasteful number, since it uses less digits than its factorization.

1131668539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260717.

The product of its digits is 116640, while the sum is 43.

The square root of 1131668539 is about 33640.2814940660. The cubic root of 1131668539 is about 1042.0928452384.

The spelling of 1131668539 in words is "one billion, one hundred thirty-one million, six hundred sixty-eight thousand, five hundred thirty-nine".