1565320448 has 36 divisors (see below), whose sum is σ = 3225333888. Its totient is φ = 757409280.

The previous prime is 1565320447. The next prime is 1565320553. The reversal of 1565320448 is 8440235651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565320447) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 90686 + ... + 106557.

It is an arithmetic number, because the mean of its divisors is an integer number (89592608).

Almost surely, 2^1565320448 is an apocalyptic number.

It is an amenable number.

1565320448 is an abundant number, since it is smaller than the sum of its proper divisors (1660013440).

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

1565320448 is an equidigital number, since it uses as much as digits as its factorization.

1565320448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197290 (or 197276 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 1565320448 is about 39564.1308257871. The cubic root of 1565320448 is about 1161.0949945802.

The spelling of 1565320448 in words is "one billion, five hundred sixty-five million, three hundred twenty thousand, four hundred forty-eight".