1123252289 has 2 divisors, whose sum is σ = 1123252290. Its totient is φ = 1123252288.

The previous prime is 1123252181. The next prime is 1123252297. The reversal of 1123252289 is 9822523211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 604323889 + 518928400 = 24583^2 + 22780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123252289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123272289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561626144 + 561626145.

It is an arithmetic number, because the mean of its divisors is an integer number (561626145).

Almost surely, 2^1123252289 is an apocalyptic number.

It is an amenable number.

1123252289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123252289 is an equidigital number, since it uses as much as digits as its factorization.

1123252289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 1123252289 is about 33514.9561986884. The cubic root of 1123252289 is about 1039.5030567772.

The spelling of 1123252289 in words is "one billion, one hundred twenty-three million, two hundred fifty-two thousand, two hundred eighty-nine".