1485649481 has 2 divisors, whose sum is σ = 1485649482. Its totient is φ = 1485649480.

The previous prime is 1485649471. The next prime is 1485649489. The reversal of 1485649481 is 1849465841.

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., 1454735881 + 30913600 = 38141^2 + 5560^2 .

It is an emirp because it is prime and its reverse (1849465841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1485649481 - 2²² = 1481455177 is a prime.

It is a super-2 number, since 2×1485649481² = 4414308760791138722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1485649489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 742824740 + 742824741.

It is an arithmetic number, because the mean of its divisors is an integer number (742824741).

Almost surely, 2^1485649481 is an apocalyptic number.

It is an amenable number.

1485649481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485649481 is an equidigital number, since it uses as much as digits as its factorization.

1485649481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 50.

The square root of 1485649481 is about 38544.1238193320. The cubic root of 1485649481 is about 1141.0520402735.

The spelling of 1485649481 in words is "one billion, four hundred eighty-five million, six hundred forty-nine thousand, four hundred eighty-one".