1448907281 has 2 divisors, whose sum is σ = 1448907282. Its totient is φ = 1448907280.

The previous prime is 1448907277. The next prime is 1448907293. The reversal of 1448907281 is 1827098441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1326052225 + 122855056 = 36415^2 + 11084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1448907281 - 2² = 1448907277 is a prime.

It is a super-2 number, since 2×1448907281² = 4198664617869625922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1448907221) 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, 724453640 + 724453641.

It is an arithmetic number, because the mean of its divisors is an integer number (724453641).

Almost surely, 2^1448907281 is an apocalyptic number.

It is an amenable number.

1448907281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1448907281 is an equidigital number, since it uses as much as digits as its factorization.

1448907281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 1448907281 is about 38064.5147217195. The cubic root of 1448907281 is about 1131.5668037515.

The spelling of 1448907281 in words is "one billion, four hundred forty-eight million, nine hundred seven thousand, two hundred eighty-one".