1440493753 has 2 divisors, whose sum is σ = 1440493754. Its totient is φ = 1440493752.

The previous prime is 1440493727. The next prime is 1440493757. The reversal of 1440493753 is 3573940441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1043806864 + 396686889 = 32308^2 + 19917^2 .

It is an emirp because it is prime and its reverse (3573940441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440493753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440493757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720246876 + 720246877.

It is an arithmetic number, because the mean of its divisors is an integer number (720246877).

Almost surely, 2^1440493753 is an apocalyptic number.

It is an amenable number.

1440493753 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440493753 is an equidigital number, since it uses as much as digits as its factorization.

1440493753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1440493753 is about 37953.8371314417. The cubic root of 1440493753 is about 1129.3722863980.

The spelling of 1440493753 in words is "one billion, four hundred forty million, four hundred ninety-three thousand, seven hundred fifty-three".