1449040981 has 2 divisors, whose sum is σ = 1449040982. Its totient is φ = 1449040980.

The previous prime is 1449040939. The next prime is 1449040991. The reversal of 1449040981 is 1890409441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1116562225 + 332478756 = 33415^2 + 18234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1449040981 is a prime.

It is a super-2 number, since 2×1449040981² = 4199439529234884722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1449040991) 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, 724520490 + 724520491.

It is an arithmetic number, because the mean of its divisors is an integer number (724520491).

Almost surely, 2^1449040981 is an apocalyptic number.

It is an amenable number.

1449040981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449040981 is an equidigital number, since it uses as much as digits as its factorization.

1449040981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1449040981 is about 38066.2709100852. The cubic root of 1449040981 is about 1131.6016083316.

The spelling of 1449040981 in words is "one billion, four hundred forty-nine million, forty thousand, nine hundred eighty-one".