1449455081 has 2 divisors, whose sum is σ = 1449455082. Its totient is φ = 1449455080.

The previous prime is 1449455053. The next prime is 1449455113. The reversal of 1449455081 is 1805549441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1346229481 + 103225600 = 36691^2 + 10160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1449455081 - 2⁶ = 1449455017 is a prime.

It is a super-2 number, since 2×1449455081² = 4201840063673433122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1449455281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724727540 + 724727541.

It is an arithmetic number, because the mean of its divisors is an integer number (724727541).

Almost surely, 2^1449455081 is an apocalyptic number.

It is an amenable number.

1449455081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449455081 is an equidigital number, since it uses as much as digits as its factorization.

1449455081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 1449455081 is about 38071.7097199482. The cubic root of 1449455081 is about 1131.7093926297.

The spelling of 1449455081 in words is "one billion, four hundred forty-nine million, four hundred fifty-five thousand, eighty-one".