1685284386 has 8 divisors (see below), whose sum is σ = 3370568784. Its totient is φ = 561761460.

The previous prime is 1685284379. The next prime is 1685284387. The reversal of 1685284386 is 6834825861.

It is a happy number.

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

1685284386 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1685284387) 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, 140440360 + ... + 140440371.

It is an arithmetic number, because the mean of its divisors is an integer number (421321098).

Almost surely, 2^1685284386 is an apocalyptic number.

1685284386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1685284386 is a wasteful number, since it uses less digits than its factorization.

1685284386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280880736.

The product of its digits is 2211840, while the sum is 51.

The square root of 1685284386 is about 41052.2153604407. The cubic root of 1685284386 is about 1190.0295136620.

The spelling of 1685284386 in words is "one billion, six hundred eighty-five million, two hundred eighty-four thousand, three hundred eighty-six".