1685018518327 has 2 divisors, whose sum is σ = 1685018518328. Its totient is φ = 1685018518326.

The previous prime is 1685018518321. The next prime is 1685018518357. The reversal of 1685018518327 is 7238158105861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1685018518327 - 2³ = 1685018518319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1685018518321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842509259163 + 842509259164.

It is an arithmetic number, because the mean of its divisors is an integer number (842509259164).

Almost surely, 2^{1685018518327} is an apocalyptic number.

1685018518327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685018518327 is an equidigital number, since it uses as much as digits as its factorization.

1685018518327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 1685018518327 in words is "one trillion, six hundred eighty-five billion, eighteen million, five hundred eighteen thousand, three hundred twenty-seven".