1684888338 has 64 divisors (see below), whose sum is σ = 3941498880. Its totient is φ = 470188992.

The previous prime is 1684888321. The next prime is 1684888349. The reversal of 1684888338 is 8338884861.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530431 + ... + 533597.

It is an arithmetic number, because the mean of its divisors is an integer number (61585920).

Almost surely, 2^1684888338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1684888338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1970749440).

1684888338 is an abundant number, since it is smaller than the sum of its proper divisors (2256610542).

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

1684888338 is a wasteful number, since it uses less digits than its factorization.

1684888338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471.

The product of its digits is 7077888, while the sum is 57.

The square root of 1684888338 is about 41047.3913665655. The cubic root of 1684888338 is about 1189.9362859280.

The spelling of 1684888338 in words is "one billion, six hundred eighty-four million, eight hundred eighty-eight thousand, three hundred thirty-eight".