1684190688 has 48 divisors (see below), whose sum is σ = 4455843840. Its totient is φ = 556972416.

The previous prime is 1684190659. The next prime is 1684190693. The reversal of 1684190688 is 8860914861.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1684190688.

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, 56878 + ... + 81261.

It is an arithmetic number, because the mean of its divisors is an integer number (92830080).

Almost surely, 2^1684190688 is an apocalyptic number.

It is an amenable number.

1684190688 is an abundant number, since it is smaller than the sum of its proper divisors (2771653152).

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

1684190688 is a wasteful number, since it uses less digits than its factorization.

1684190688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138279 (or 138271 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 1684190688 is about 41038.8923827142. The cubic root of 1684190688 is about 1189.7720270398.

The spelling of 1684190688 in words is "one billion, six hundred eighty-four million, one hundred ninety thousand, six hundred eighty-eight".