1684439312 has 20 divisors (see below), whose sum is σ = 3368879616. Its totient is φ = 815051040.

The previous prime is 1684439291. The next prime is 1684439327. The reversal of 1684439312 is 2139344861.

1684439312 is an admirable number.

It is a super-2 number, since 2×1684439312² = 5674671591622066688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1684439312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697528 + ... + 1698519.

Almost surely, 2^1684439312 is an apocalyptic number.

It is an amenable number.

1684439312 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.

1684439312 is a wasteful number, since it uses less digits than its factorization.

1684439312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396086 (or 3396080 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 1684439312 is about 41041.9213975174. The cubic root of 1684439312 is about 1189.8305697626.

The spelling of 1684439312 in words is "one billion, six hundred eighty-four million, four hundred thirty-nine thousand, three hundred twelve".