1685867339 has 12 divisors (see below), whose sum is σ = 1928632944. Its totient is φ = 1464641664.

The previous prime is 1685867311. The next prime is 1685867369. The reversal of 1685867339 is 9337685861.

It is a de Polignac number, because none of the positive numbers 2^k-1685867339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1685867369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220607 + ... + 228120.

It is an arithmetic number, because the mean of its divisors is an integer number (160719412).

Almost surely, 2^1685867339 is an apocalyptic number.

1685867339 is a deficient number, since it is larger than the sum of its proper divisors (242765605).

1685867339 is a wasteful number, since it uses less digits than its factorization.

1685867339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448774 (or 448757 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 1685867339 is about 41059.3148871240. The cubic root of 1685867339 is about 1190.1667113376.

The spelling of 1685867339 in words is "one billion, six hundred eighty-five million, eight hundred sixty-seven thousand, three hundred thirty-nine".