1130531989 has 2 divisors, whose sum is σ = 1130531990. Its totient is φ = 1130531988.

The previous prime is 1130531953. The next prime is 1130532001. The reversal of 1130531989 is 9891350311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092302500 + 38229489 = 33050^2 + 6183^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130531989 - 2⁹ = 1130531477 is a prime.

It is a super-2 number, since 2×1130531989² = 2556205156304592242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1130631989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565265994 + 565265995.

It is an arithmetic number, because the mean of its divisors is an integer number (565265995).

Almost surely, 2^1130531989 is an apocalyptic number.

It is an amenable number.

1130531989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1130531989 is an equidigital number, since it uses as much as digits as its factorization.

1130531989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1130531989 is about 33623.3845559902. The cubic root of 1130531989 is about 1041.7438657438.

The spelling of 1130531989 in words is "one billion, one hundred thirty million, five hundred thirty-one thousand, nine hundred eighty-nine".