1248750449 has 2 divisors, whose sum is σ = 1248750450. Its totient is φ = 1248750448.

The previous prime is 1248750443. The next prime is 1248750493. The reversal of 1248750449 is 9440578421.

It is an a-pointer prime, because the next prime (1248750493) can be obtained adding 1248750449 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1187284849 + 61465600 = 34457^2 + 7840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248750449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1248750443) 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, 624375224 + 624375225.

It is an arithmetic number, because the mean of its divisors is an integer number (624375225).

Almost surely, 2^1248750449 is an apocalyptic number.

It is an amenable number.

1248750449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248750449 is an equidigital number, since it uses as much as digits as its factorization.

1248750449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1248750449 is about 35337.6633211649. The cubic root of 1248750449 is about 1076.8582818751.

The spelling of 1248750449 in words is "one billion, two hundred forty-eight million, seven hundred fifty thousand, four hundred forty-nine".