1248491473 has 2 divisors, whose sum is σ = 1248491474. Its totient is φ = 1248491472.

The previous prime is 1248491471. The next prime is 1248491537. The reversal of 1248491473 is 3741948421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1186664704 + 61826769 = 34448^2 + 7863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248491473 - 2¹ = 1248491471 is a prime.

Together with 1248491471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1248491471) 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, 624245736 + 624245737.

It is an arithmetic number, because the mean of its divisors is an integer number (624245737).

Almost surely, 2^1248491473 is an apocalyptic number.

It is an amenable number.

1248491473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248491473 is an equidigital number, since it uses as much as digits as its factorization.

1248491473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 1248491473 is about 35333.9988254938. The cubic root of 1248491473 is about 1076.7838341925.

The spelling of 1248491473 in words is "one billion, two hundred forty-eight million, four hundred ninety-one thousand, four hundred seventy-three".