1684088648 has 36 divisors (see below), whose sum is σ = 3473456595. Its totient is φ = 764914480.

The previous prime is 1684088639. The next prime is 1684088669. The reversal of 1684088648 is 8468804861.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 842044324 + 842044324 = 29018^2 + 29018^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=29018.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1684088648.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1276133 + ... + 1277451.

Almost surely, 2^1684088648 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 1684088648

1684088648 is an abundant number, since it is smaller than the sum of its proper divisors (1789367947).

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

1684088648 is an equidigital number, since it uses as much as digits as its factorization.

1684088648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 53.

The square root of 1684088648 is about 41037.6491529425. The cubic root of 1684088648 is about 1189.7479983296.

The spelling of 1684088648 in words is "one billion, six hundred eighty-four million, eighty-eight thousand, six hundred forty-eight".