1440757143989 has 2 divisors, whose sum is σ = 1440757143990. Its totient is φ = 1440757143988.

The previous prime is 1440757143979. The next prime is 1440757144003. The reversal of 1440757143989 is 9893417570441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745559717764 + 695197426225 = 863458^2 + 833785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440757143989 - 2²⁰ = 1440756095413 is a prime.

It is a super-2 number, since 2×1440757143989² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440757143979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720378571994 + 720378571995.

It is an arithmetic number, because the mean of its divisors is an integer number (720378571995).

Almost surely, 2^{1440757143989} is an apocalyptic number.

It is an amenable number.

1440757143989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440757143989 is an equidigital number, since it uses as much as digits as its factorization.

1440757143989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 1440757143989 in words is "one trillion, four hundred forty billion, seven hundred fifty-seven million, one hundred forty-three thousand, nine hundred eighty-nine".