1440314021813 has 2 divisors, whose sum is σ = 1440314021814. Its totient is φ = 1440314021812.

The previous prime is 1440314021803. The next prime is 1440314021851. The reversal of 1440314021813 is 3181204130441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1431712757764 + 8601264049 = 1196542^2 + 92743^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440314021813 is a prime.

It is a super-2 number, since 2×1440314021813² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1440314021813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440314021803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720157010906 + 720157010907.

It is an arithmetic number, because the mean of its divisors is an integer number (720157010907).

Almost surely, 2^{1440314021813} is an apocalyptic number.

It is an amenable number.

1440314021813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440314021813 is an equidigital number, since it uses as much as digits as its factorization.

1440314021813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 1440314021813 in words is "one trillion, four hundred forty billion, three hundred fourteen million, twenty-one thousand, eight hundred thirteen".