1648447488 has 156 divisors (see below), whose sum is σ = 4821124308. Its totient is φ = 542638080.

The previous prime is 1648447477. The next prime is 1648447511. The reversal of 1648447488 is 8847448461.

1648447488 is a `hidden beast` number, since 16 + 4 + 84 + 474 + 88 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 632623104 + 1015824384 = 25152^2 + 31872^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3575578 + ... + 3576038.

It is an arithmetic number, because the mean of its divisors is an integer number (30904643).

Almost surely, 2^1648447488 is an apocalyptic number.

1648447488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1648447488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2410562154).

1648447488 is an abundant number, since it is smaller than the sum of its proper divisors (3172676820).

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

1648447488 is an equidigital number, since it uses as much as digits as its factorization.

1648447488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 563 counting only the distinct ones).

The product of its digits is 5505024, while the sum is 54.

The square root of 1648447488 is about 40601.0774241276. The cubic root of 1648447488 is about 1181.2950179534.

The spelling of 1648447488 in words is "one billion, six hundred forty-eight million, four hundred forty-seven thousand, four hundred eighty-eight".