1131163597 has 2 divisors, whose sum is σ = 1131163598. Its totient is φ = 1131163596.

The previous prime is 1131163549. The next prime is 1131163601. The reversal of 1131163597 is 7953611311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 966836836 + 164326761 = 31094^2 + 12819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131163597 - 2¹⁵ = 1131130829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131163997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565581798 + 565581799.

It is an arithmetic number, because the mean of its divisors is an integer number (565581799).

Almost surely, 2^1131163597 is an apocalyptic number.

It is an amenable number.

1131163597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131163597 is an equidigital number, since it uses as much as digits as its factorization.

1131163597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17010, while the sum is 37.

The square root of 1131163597 is about 33632.7756362748. The cubic root of 1131163597 is about 1041.9378308479.

It can be divided in two parts, 1131163 and 597, that added together give a triangular number (1131760 = T₁₅₀₄).

The spelling of 1131163597 in words is "one billion, one hundred thirty-one million, one hundred sixty-three thousand, five hundred ninety-seven".