1740442644431 has 2 divisors, whose sum is σ = 1740442644432. Its totient is φ = 1740442644430.

The previous prime is 1740442644373. The next prime is 1740442644497. The reversal of 1740442644431 is 1344462440471.

It is a weak prime.

It is an emirp because it is prime and its reverse (1344462440471) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1740442644431 is a prime.

It is a super-2 number, since 2×1740442644431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1740442647431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870221322215 + 870221322216.

It is an arithmetic number, because the mean of its divisors is an integer number (870221322216).

Almost surely, 2^{1740442644431} is an apocalyptic number.

1740442644431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1740442644431 is an equidigital number, since it uses as much as digits as its factorization.

1740442644431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1032192, while the sum is 44.

The spelling of 1740442644431 in words is "one trillion, seven hundred forty billion, four hundred forty-two million, six hundred forty-four thousand, four hundred thirty-one".