1686317039854 has 8 divisors (see below), whose sum is σ = 2529487052928. Its totient is φ = 843154688880.

The previous prime is 1686317039851. The next prime is 1686317039861. The reversal of 1686317039854 is 4589307136861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1686317039792 and 1686317039801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686317039851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329447 + ... + 2267170.

It is an arithmetic number, because the mean of its divisors is an integer number (316185881616).

Almost surely, 2^{1686317039854} is an apocalyptic number.

1686317039854 is a deficient number, since it is larger than the sum of its proper divisors (843170013074).

1686317039854 is a wasteful number, since it uses less digits than its factorization.

1686317039854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831050.

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 1686317039854 in words is "one trillion, six hundred eighty-six billion, three hundred seventeen million, thirty-nine thousand, eight hundred fifty-four".