1648685016 has 288 divisors, whose sum is σ = 5240114880. Its totient is φ = 484989120.

The previous prime is 1648684993. The next prime is 1648685021. The reversal of 1648685016 is 6105868461.

1648685016 is a `hidden beast` number, since 1 + 64 + 86 + 8 + 501 + 6 = 666.

1648685016 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10114551 + ... + 10114713.

Almost surely, 2^1648685016 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 1648685016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620057440).

1648685016 is an abundant number, since it is smaller than the sum of its proper divisors (3591429864).

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

1648685016 is a wasteful number, since it uses less digits than its factorization.

1648685016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1648685016 is about 40604.0024628115. The cubic root of 1648685016 is about 1181.3517535929.

The spelling of 1648685016 in words is "one billion, six hundred forty-eight million, six hundred eighty-five thousand, sixteen".