1648330240 has 40 divisors (see below), whose sum is σ = 3952135440. Its totient is φ = 659331072.

The previous prime is 1648330193. The next prime is 1648330241. The reversal of 1648330240 is 420338461.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648330241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319380 + ... + 324499.

It is an arithmetic number, because the mean of its divisors is an integer number (98803386).

Almost surely, 2^1648330240 is an apocalyptic number.

1648330240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648330240 is an abundant number, since it is smaller than the sum of its proper divisors (2303805200).

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

1648330240 is an frugal number, since it uses more digits than its factorization.

1648330240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643902 (or 643886 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1648330240 is about 40599.6334958827. The cubic root of 1648330240 is about 1181.2670102344.

The spelling of 1648330240 in words is "one billion, six hundred forty-eight million, three hundred thirty thousand, two hundred forty".