18957073085879 has 2 divisors, whose sum is σ = 18957073085880. Its totient is φ = 18957073085878.

The previous prime is 18957073085849. The next prime is 18957073085959. The reversal of 18957073085879 is 97858037075981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18957073085879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18957073085849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9478536542939 + 9478536542940.

It is an arithmetic number, because the mean of its divisors is an integer number (9478536542940).

Almost surely, 2^{18957073085879} is an apocalyptic number.

18957073085879 is a deficient number, since it is larger than the sum of its proper divisors (1).

18957073085879 is an equidigital number, since it uses as much as digits as its factorization.

18957073085879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1066867200, while the sum is 77.

The spelling of 18957073085879 in words is "eighteen trillion, nine hundred fifty-seven billion, seventy-three million, eighty-five thousand, eight hundred seventy-nine".