18349845858271 has 2 divisors, whose sum is σ = 18349845858272. Its totient is φ = 18349845858270.

The previous prime is 18349845858233. The next prime is 18349845858283. The reversal of 18349845858271 is 17285854894381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18349845858271 - 2¹⁹ = 18349845333983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18349845858194 and 18349845858203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18349845828271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9174922929135 + 9174922929136.

It is an arithmetic number, because the mean of its divisors is an integer number (9174922929136).

Almost surely, 2^{18349845858271} is an apocalyptic number.

18349845858271 is a deficient number, since it is larger than the sum of its proper divisors (1).

18349845858271 is an equidigital number, since it uses as much as digits as its factorization.

18349845858271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 619315200, while the sum is 73.

The spelling of 18349845858271 in words is "eighteen trillion, three hundred forty-nine billion, eight hundred forty-five million, eight hundred fifty-eight thousand, two hundred seventy-one".