1248955289 has 2 divisors, whose sum is σ = 1248955290. Its totient is φ = 1248955288.

The previous prime is 1248955231. The next prime is 1248955307. The reversal of 1248955289 is 9825598421.

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., 955860889 + 293094400 = 30917^2 + 17120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248955289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1248955289.

It is not a weakly prime, because it can be changed into another prime (1248955889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624477644 + 624477645.

It is an arithmetic number, because the mean of its divisors is an integer number (624477645).

Almost surely, 2^1248955289 is an apocalyptic number.

It is an amenable number.

1248955289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248955289 is an equidigital number, since it uses as much as digits as its factorization.

1248955289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 53.

The square root of 1248955289 is about 35340.5615263821. The cubic root of 1248955289 is about 1076.9171598227.

The spelling of 1248955289 in words is "one billion, two hundred forty-eight million, nine hundred fifty-five thousand, two hundred eighty-nine".