1648120520 has 32 divisors (see below), whose sum is σ = 3710880000. Its totient is φ = 658784448.

The previous prime is 1648120519. The next prime is 1648120567. The reversal of 1648120520 is 250218461.

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 7 ways as a sum of consecutive naturals, for example, 46217 + ... + 73703.

It is an arithmetic number, because the mean of its divisors is an integer number (115965000).

Almost surely, 2^1648120520 is an apocalyptic number.

1648120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648120520 is an abundant number, since it is smaller than the sum of its proper divisors (2062759480).

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

1648120520 is a wasteful number, since it uses less digits than its factorization.

1648120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28997 (or 28993 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1648120520 is about 40597.0506317885. The cubic root of 1648120520 is about 1181.2169098725.

Adding to 1648120520 its reverse (250218461), we get a palindrome (1898338981).

The spelling of 1648120520 in words is "one billion, six hundred forty-eight million, one hundred twenty thousand, five hundred twenty".