1684825456 has 40 divisors (see below), whose sum is σ = 3484598400. Its totient is φ = 786824640.

The previous prime is 1684825411. The next prime is 1684825469. The reversal of 1684825456 is 6545284861.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17446 + ... + 60613.

It is an arithmetic number, because the mean of its divisors is an integer number (87114960).

Almost surely, 2^1684825456 is an apocalyptic number.

1684825456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1684825456 is an abundant number, since it is smaller than the sum of its proper divisors (1799772944).

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

1684825456 is a wasteful number, since it uses less digits than its factorization.

1684825456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78157 (or 78151 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 49.

The square root of 1684825456 is about 41046.6253911329. The cubic root of 1684825456 is about 1189.9214824733.

The spelling of 1684825456 in words is "one billion, six hundred eighty-four million, eight hundred twenty-five thousand, four hundred fifty-six".