1648684816 has 15 divisors (see below), whose sum is σ = 3194641543. Its totient is φ = 824261200.

The previous prime is 1648684799. The next prime is 1648684831. The reversal of 1648684816 is 6184868461.

The square root of 1648684816 is 40604.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 157341 + ... + 167491.

Almost surely, 2^1648684816 is an apocalyptic number.

1648684816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1648684816 is the 40604-th square number.

It is an amenable number.

1648684816 is a deficient number, since it is larger than the sum of its proper divisors (1545956727).

1648684816 is an frugal number, since it uses more digits than its factorization.

1648684816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310 (or 10153 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The cubic root of 1648684816 is about 1181.3517058235.

The spelling of 1648684816 in words is "one billion, six hundred forty-eight million, six hundred eighty-four thousand, eight hundred sixteen".