1648340816 has 20 divisors (see below), whose sum is σ = 3332515872. Its totient is φ = 788336736.

The previous prime is 1648340789. The next prime is 1648340833. The reversal of 1648340816 is 6180438461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2239226 + ... + 2239961.

Almost surely, 2^1648340816 is an apocalyptic number.

1648340816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1648340816 is an abundant number, since it is smaller than the sum of its proper divisors (1684175056).

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

1648340816 is a wasteful number, since it uses less digits than its factorization.

1648340816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479218 (or 4479212 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 1648340816 is about 40599.7637431550. The cubic root of 1648340816 is about 1181.2695366402.

The spelling of 1648340816 in words is "one billion, six hundred forty-eight million, three hundred forty thousand, eight hundred sixteen".