1131792491 has 2 divisors, whose sum is σ = 1131792492. Its totient is φ = 1131792490.

The previous prime is 1131792451. The next prime is 1131792517. The reversal of 1131792491 is 1942971311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131792491 - 2¹⁰ = 1131791467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131792421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565896245 + 565896246.

It is an arithmetic number, because the mean of its divisors is an integer number (565896246).

Almost surely, 2^1131792491 is an apocalyptic number.

1131792491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131792491 is an equidigital number, since it uses as much as digits as its factorization.

1131792491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 1131792491 is about 33642.1237587641. The cubic root of 1131792491 is about 1042.1308907651.

The spelling of 1131792491 in words is "one billion, one hundred thirty-one million, seven hundred ninety-two thousand, four hundred ninety-one".