1648068864 has 144 divisors (see below), whose sum is σ = 4929735552. Its totient is φ = 484982784.

The previous prime is 1648068857. The next prime is 1648068899. The reversal of 1648068864 is 4688608461.

It is a super-2 number, since 2×1648068864² = 5432261960972500992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226044 + ... + 233220.

Almost surely, 2^1648068864 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 1648068864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2464867776).

1648068864 is an abundant number, since it is smaller than the sum of its proper divisors (3281666688).

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

1648068864 is a wasteful number, since it uses less digits than its factorization.

1648068864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232 (or 7218 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The square root of 1648068864 is about 40596.4144229512. The cubic root of 1648068864 is about 1181.2045690318.

The spelling of 1648068864 in words is "one billion, six hundred forty-eight million, sixty-eight thousand, eight hundred sixty-four".