2185018683393 has 32 divisors (see below), whose sum is σ = 3585754525696. Its totient is φ = 1152510700608.

The previous prime is 2185018683391. The next prime is 2185018683401. The reversal of 2185018683393 is 3933868105812.

It is a happy number.

It is not a de Polignac number, because 2185018683393 - 2¹ = 2185018683391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2185018683391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18813780 + ... + 18929562.

It is an arithmetic number, because the mean of its divisors is an integer number (112054828928).

Almost surely, 2^{2185018683393} is an apocalyptic number.

It is an amenable number.

2185018683393 is a deficient number, since it is larger than the sum of its proper divisors (1400735842303).

2185018683393 is a wasteful number, since it uses less digits than its factorization.

2185018683393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184933.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 2185018683393 in words is "two trillion, one hundred eighty-five billion, eighteen million, six hundred eighty-three thousand, three hundred ninety-three".