19144429332389 has 2 divisors, whose sum is σ = 19144429332390. Its totient is φ = 19144429332388.

The previous prime is 19144429332367. The next prime is 19144429332433. The reversal of 19144429332389 is 98323392444191.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15532308621025 + 3612120711364 = 3941105^2 + 1900558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19144429332389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19144429332689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9572214666194 + 9572214666195.

It is an arithmetic number, because the mean of its divisors is an integer number (9572214666195).

Almost surely, 2^{19144429332389} is an apocalyptic number.

It is an amenable number.

19144429332389 is a deficient number, since it is larger than the sum of its proper divisors (1).

19144429332389 is an equidigital number, since it uses as much as digits as its factorization.

19144429332389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40310784, while the sum is 62.

The spelling of 19144429332389 in words is "nineteen trillion, one hundred forty-four billion, four hundred twenty-nine million, three hundred thirty-two thousand, three hundred eighty-nine".