1248144481 has 2 divisors, whose sum is σ = 1248144482. Its totient is φ = 1248144480.

The previous prime is 1248144479. The next prime is 1248144497. The reversal of 1248144481 is 1844418421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057290256 + 190854225 = 32516^2 + 13815^2 .

It is an emirp because it is prime and its reverse (1844418421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1248144481 - 2¹ = 1248144479 is a prime.

It is a super-3 number, since 3×1248144481³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 1248144479, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1248144481.

It is not a weakly prime, because it can be changed into another prime (1248144451) 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, 624072240 + 624072241.

It is an arithmetic number, because the mean of its divisors is an integer number (624072241).

Almost surely, 2^1248144481 is an apocalyptic number.

It is an amenable number.

1248144481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248144481 is an equidigital number, since it uses as much as digits as its factorization.

1248144481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32768, while the sum is 37.

The square root of 1248144481 is about 35329.0883126072. The cubic root of 1248144481 is about 1076.6840684607.

The spelling of 1248144481 in words is "one billion, two hundred forty-eight million, one hundred forty-four thousand, four hundred eighty-one".