3648440881 has 2 divisors, whose sum is σ = 3648440882. Its totient is φ = 3648440880.

The previous prime is 3648440843. The next prime is 3648440891. The reversal of 3648440881 is 1880448463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3260981025 + 387459856 = 57105^2 + 19684^2 .

It is an emirp because it is prime and its reverse (1880448463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3648440881 - 2¹⁷ = 3648309809 is a prime.

It is a super-2 number, since 2×3648440881² = 26622241724304112322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3648440821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824220440 + 1824220441.

It is an arithmetic number, because the mean of its divisors is an integer number (1824220441).

Almost surely, 2^3648440881 is an apocalyptic number.

It is an amenable number.

3648440881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3648440881 is an equidigital number, since it uses as much as digits as its factorization.

3648440881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 589824, while the sum is 46.

The square root of 3648440881 is about 60402.3251290875. The cubic root of 3648440881 is about 1539.4624650355.

The spelling of 3648440881 in words is "three billion, six hundred forty-eight million, four hundred forty thousand, eight hundred eighty-one".