1248545449 has 2 divisors, whose sum is σ = 1248545450. Its totient is φ = 1248545448.

The previous prime is 1248545401. The next prime is 1248545453. The reversal of 1248545449 is 9445458421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802702224 + 445843225 = 28332^2 + 21115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248545449 - 2⁹ = 1248544937 is a prime.

It is a super-2 number, since 2×1248545449² = 3117731476437223202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1248545399 and 1248545408.

It is not a weakly prime, because it can be changed into another prime (1248545849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624272724 + 624272725.

It is an arithmetic number, because the mean of its divisors is an integer number (624272725).

Almost surely, 2^1248545449 is an apocalyptic number.

It is an amenable number.

1248545449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248545449 is an equidigital number, since it uses as much as digits as its factorization.

1248545449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 46.

The square root of 1248545449 is about 35334.7626141736. The cubic root of 1248545449 is about 1076.7993514915.

The spelling of 1248545449 in words is "one billion, two hundred forty-eight million, five hundred forty-five thousand, four hundred forty-nine".