18959444022839 has 2 divisors, whose sum is σ = 18959444022840. Its totient is φ = 18959444022838.

The previous prime is 18959444022833. The next prime is 18959444022863. The reversal of 18959444022839 is 93822044495981.

It is a weak prime.

It is an emirp because it is prime and its reverse (93822044495981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18959444022839 - 2⁴ = 18959444022823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18959444022833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9479722011419 + 9479722011420.

It is an arithmetic number, because the mean of its divisors is an integer number (9479722011420).

Almost surely, 2^{18959444022839} is an apocalyptic number.

18959444022839 is a deficient number, since it is larger than the sum of its proper divisors (1).

18959444022839 is an equidigital number, since it uses as much as digits as its factorization.

18959444022839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 179159040, while the sum is 68.

The spelling of 18959444022839 in words is "eighteen trillion, nine hundred fifty-nine billion, four hundred forty-four million, twenty-two thousand, eight hundred thirty-nine".