1162531289 has 2 divisors, whose sum is σ = 1162531290. Its totient is φ = 1162531288.

The previous prime is 1162531277. The next prime is 1162531291. The reversal of 1162531289 is 9821352611.

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., 922033225 + 240498064 = 30365^2 + 15508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1162531289 - 2²⁰ = 1161482713 is a prime.

Together with 1162531291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1162531219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581265644 + 581265645.

It is an arithmetic number, because the mean of its divisors is an integer number (581265645).

Almost surely, 2^1162531289 is an apocalyptic number.

It is an amenable number.

1162531289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162531289 is an equidigital number, since it uses as much as digits as its factorization.

1162531289 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1162531289 is about 34095.9130835354. The cubic root of 1162531289 is about 1051.4812921953.

The spelling of 1162531289 in words is "one billion, one hundred sixty-two million, five hundred thirty-one thousand, two hundred eighty-nine".