1440620353 has 2 divisors, whose sum is σ = 1440620354. Its totient is φ = 1440620352.

The previous prime is 1440620339. The next prime is 1440620381. The reversal of 1440620353 is 3530260441.

It is an a-pointer prime, because the next prime (1440620381) can be obtained adding 1440620353 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254788929 + 185831424 = 35423^2 + 13632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440620353 - 2¹³ = 1440612161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440626353) 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, 720310176 + 720310177.

It is an arithmetic number, because the mean of its divisors is an integer number (720310177).

Almost surely, 2^1440620353 is an apocalyptic number.

It is an amenable number.

1440620353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440620353 is an equidigital number, since it uses as much as digits as its factorization.

1440620353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1440620353 is about 37955.5049103552. The cubic root of 1440620353 is about 1129.4053709665.

Adding to 1440620353 its reverse (3530260441), we get a palindrome (4970880794).

The spelling of 1440620353 in words is "one billion, four hundred forty million, six hundred twenty thousand, three hundred fifty-three".