1449713561 has 2 divisors, whose sum is σ = 1449713562. Its totient is φ = 1449713560.

The previous prime is 1449713557. The next prime is 1449713579. The reversal of 1449713561 is 1653179441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094617225 + 355096336 = 33085^2 + 18844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1449713561 - 2² = 1449713557 is a prime.

It is not a weakly prime, because it can be changed into another prime (1449713581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724856780 + 724856781.

It is an arithmetic number, because the mean of its divisors is an integer number (724856781).

Almost surely, 2^1449713561 is an apocalyptic number.

It is an amenable number.

1449713561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1449713561 is an equidigital number, since it uses as much as digits as its factorization.

1449713561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 1449713561 is about 38075.1042152218. The cubic root of 1449713561 is about 1131.7766608652.

The spelling of 1449713561 in words is "one billion, four hundred forty-nine million, seven hundred thirteen thousand, five hundred sixty-one".