1131079249 has 2 divisors, whose sum is σ = 1131079250. Its totient is φ = 1131079248.

The previous prime is 1131079231. The next prime is 1131079273. The reversal of 1131079249 is 9429701311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787644225 + 343435024 = 28065^2 + 18532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131079249 - 2⁹ = 1131078737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131079219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565539624 + 565539625.

It is an arithmetic number, because the mean of its divisors is an integer number (565539625).

Almost surely, 2^1131079249 is an apocalyptic number.

It is an amenable number.

1131079249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131079249 is an equidigital number, since it uses as much as digits as its factorization.

1131079249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1131079249 is about 33631.5216575165. The cubic root of 1131079249 is about 1041.9119319838.

The spelling of 1131079249 in words is "one billion, one hundred thirty-one million, seventy-nine thousand, two hundred forty-nine".