1440605057 has 2 divisors, whose sum is σ = 1440605058. Its totient is φ = 1440605056.

The previous prime is 1440604993. The next prime is 1440605059. The reversal of 1440605057 is 7505060441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918756721 + 521848336 = 30311^2 + 22844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440605057 - 2⁶ = 1440604993 is a prime.

Together with 1440605059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1440605059) 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, 720302528 + 720302529.

It is an arithmetic number, because the mean of its divisors is an integer number (720302529).

Almost surely, 2^1440605057 is an apocalyptic number.

It is an amenable number.

1440605057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440605057 is an equidigital number, since it uses as much as digits as its factorization.

1440605057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1440605057 is about 37955.3034107225. The cubic root of 1440605057 is about 1129.4013737428.

Adding to 1440605057 its reverse (7505060441), we get a palindrome (8945665498).

The spelling of 1440605057 in words is "one billion, four hundred forty million, six hundred five thousand, fifty-seven".