1485209549 has 2 divisors, whose sum is σ = 1485209550. Its totient is φ = 1485209548.

The previous prime is 1485209507. The next prime is 1485209581. The reversal of 1485209549 is 9459025841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1063933924 + 421275625 = 32618^2 + 20525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1485209549 - 2¹² = 1485205453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1485209599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742604774 + 742604775.

It is an arithmetic number, because the mean of its divisors is an integer number (742604775).

Almost surely, 2^1485209549 is an apocalyptic number.

It is an amenable number.

1485209549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485209549 is an equidigital number, since it uses as much as digits as its factorization.

1485209549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 1485209549 is about 38538.4165346736. The cubic root of 1485209549 is about 1140.9393993331.

The spelling of 1485209549 in words is "one billion, four hundred eighty-five million, two hundred nine thousand, five hundred forty-nine".