1131262589 has 2 divisors, whose sum is σ = 1131262590. Its totient is φ = 1131262588.

The previous prime is 1131262547. The next prime is 1131262607. The reversal of 1131262589 is 9852621311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120040089 + 11222500 = 33467^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131262589 - 2⁸ = 1131262333 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131261589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565631294 + 565631295.

It is an arithmetic number, because the mean of its divisors is an integer number (565631295).

Almost surely, 2^1131262589 is an apocalyptic number.

It is an amenable number.

1131262589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131262589 is an equidigital number, since it uses as much as digits as its factorization.

1131262589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 1131262589 is about 33634.2472637638. The cubic root of 1131262589 is about 1041.9682244772.

The spelling of 1131262589 in words is "one billion, one hundred thirty-one million, two hundred sixty-two thousand, five hundred eighty-nine".