1444919640631 has 2 divisors, whose sum is σ = 1444919640632. Its totient is φ = 1444919640630.

The previous prime is 1444919640629. The next prime is 1444919640673. The reversal of 1444919640631 is 1360469194441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1444919640631 - 2¹ = 1444919640629 is a prime.

It is a super-2 number, since 2×1444919640631² (a number of 25 digits) contains 22 as substring.

Together with 1444919640629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444919640601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722459820315 + 722459820316.

It is an arithmetic number, because the mean of its divisors is an integer number (722459820316).

Almost surely, 2^{1444919640631} is an apocalyptic number.

1444919640631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444919640631 is an equidigital number, since it uses as much as digits as its factorization.

1444919640631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 1444919640631 in words is "one trillion, four hundred forty-four billion, nine hundred nineteen million, six hundred forty thousand, six hundred thirty-one".