1850168518447 has 2 divisors, whose sum is σ = 1850168518448. Its totient is φ = 1850168518446.

The previous prime is 1850168518439. The next prime is 1850168518529. The reversal of 1850168518447 is 7448158610581.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1850168518447 - 2³ = 1850168518439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1850168518391 and 1850168518400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1850168512447) 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, 925084259223 + 925084259224.

It is an arithmetic number, because the mean of its divisors is an integer number (925084259224).

Almost surely, 2^{1850168518447} is an apocalyptic number.

1850168518447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850168518447 is an equidigital number, since it uses as much as digits as its factorization.

1850168518447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8601600, while the sum is 58.

The spelling of 1850168518447 in words is "one trillion, eight hundred fifty billion, one hundred sixty-eight million, five hundred eighteen thousand, four hundred forty-seven".