1131792509 has 4 divisors (see below), whose sum is σ = 1132462716. Its totient is φ = 1131122304.

The previous prime is 1131792491. The next prime is 1131792517. The reversal of 1131792509 is 9052971311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 879300409 + 252492100 = 29653^2 + 15890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131792509 - 2⁸ = 1131792253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131794509) 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 3 ways as a sum of consecutive naturals, for example, 332564 + ... + 335949.

It is an arithmetic number, because the mean of its divisors is an integer number (283115679).

Almost surely, 2^1131792509 is an apocalyptic number.

It is an amenable number.

1131792509 is a deficient number, since it is larger than the sum of its proper divisors (670207).

1131792509 is an equidigital number, since it uses as much as digits as its factorization.

1131792509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670206.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 1131792509 is about 33642.1240262859. The cubic root of 1131792509 is about 1042.1308962897.

The spelling of 1131792509 in words is "one billion, one hundred thirty-one million, seven hundred ninety-two thousand, five hundred nine".