1684755384 has 128 divisors (see below), whose sum is σ = 4856544000. Its totient is φ = 482678784.

The previous prime is 1684755353. The next prime is 1684755389. The reversal of 1684755384 is 4835574861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1684755389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347344 + ... + 352160.

It is an arithmetic number, because the mean of its divisors is an integer number (37941750).

Almost surely, 2^1684755384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1684755384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2428272000).

1684755384 is an abundant number, since it is smaller than the sum of its proper divisors (3171788616).

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

1684755384 is a wasteful number, since it uses less digits than its factorization.

1684755384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4917 (or 4913 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 51.

The square root of 1684755384 is about 41045.7718163516. The cubic root of 1684755384 is about 1189.9049859407.

The spelling of 1684755384 in words is "one billion, six hundred eighty-four million, seven hundred fifty-five thousand, three hundred eighty-four".