1131042589 has 4 divisors (see below), whose sum is σ = 1197574524. Its totient is φ = 1064510656.

The previous prime is 1131042587. The next prime is 1131042607. The reversal of 1131042589 is 9852401311.

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 1027715364 + 103327225 = 32058^2 + 10165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131042589 - 2¹ = 1131042587 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 (1131042587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33265942 + ... + 33265975.

It is an arithmetic number, because the mean of its divisors is an integer number (299393631).

Almost surely, 2^1131042589 is an apocalyptic number.

It is an amenable number.

1131042589 is a deficient number, since it is larger than the sum of its proper divisors (66531935).

1131042589 is an equidigital number, since it uses as much as digits as its factorization.

1131042589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66531934.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1131042589 is about 33630.9766286975. The cubic root of 1131042589 is about 1041.9006752117.

The spelling of 1131042589 in words is "one billion, one hundred thirty-one million, forty-two thousand, five hundred eighty-nine".