1685307280858 has 8 divisors (see below), whose sum is σ = 2528075132352. Its totient is φ = 842615570076.

The previous prime is 1685307280831. The next prime is 1685307280913. The reversal of 1685307280858 is 8580827035861.

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 = 1685307280796 and 1685307280805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18979810 + ... + 19068397.

It is an arithmetic number, because the mean of its divisors is an integer number (316009391544).

Almost surely, 2^{1685307280858} is an apocalyptic number.

1685307280858 is a deficient number, since it is larger than the sum of its proper divisors (842767851494).

1685307280858 is a wasteful number, since it uses less digits than its factorization.

1685307280858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38070356.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 1685307280858 in words is "one trillion, six hundred eighty-five billion, three hundred seven million, two hundred eighty thousand, eight hundred fifty-eight".