2185688740674 has 16 divisors (see below), whose sum is σ = 4628517333408. Its totient is φ = 685706271552.

The previous prime is 2185688740663. The next prime is 2185688740717. The reversal of 2185688740674 is 4760478865812.

It is a super-2 number, since 2×2185688740674² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 10714160392 + ... + 10714160595.

It is an arithmetic number, because the mean of its divisors is an integer number (289282333338).

Almost surely, 2^{2185688740674} is an apocalyptic number.

2185688740674 is an abundant number, since it is smaller than the sum of its proper divisors (2442828592734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2185688740674 is a wasteful number, since it uses less digits than its factorization.

2185688740674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428321009.

The product of its (nonzero) digits is 144506880, while the sum is 66.

The spelling of 2185688740674 in words is "two trillion, one hundred eighty-five billion, six hundred eighty-eight million, seven hundred forty thousand, six hundred seventy-four".