1481405609 has 2 divisors, whose sum is σ = 1481405610. Its totient is φ = 1481405608.

The previous prime is 1481405539. The next prime is 1481405617. The reversal of 1481405609 is 9065041841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1461379984 + 20025625 = 38228^2 + 4475^2 .

It is an emirp because it is prime and its reverse (9065041841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1481405609 - 2⁸ = 1481405353 is a prime.

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 (1481405659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 740702804 + 740702805.

It is an arithmetic number, because the mean of its divisors is an integer number (740702805).

Almost surely, 2^1481405609 is an apocalyptic number.

It is an amenable number.

1481405609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1481405609 is an equidigital number, since it uses as much as digits as its factorization.

1481405609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1481405609 is about 38489.0323209093. The cubic root of 1481405609 is about 1139.9645031011.

The spelling of 1481405609 in words is "one billion, four hundred eighty-one million, four hundred five thousand, six hundred nine".