1565740848 has 80 divisors (see below), whose sum is σ = 4687842816. Its totient is φ = 441047040.

The previous prime is 1565740793. The next prime is 1565740849. The reversal of 1565740848 is 8480475651.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1565740797 and 1565740806.

It is not an unprimeable number, because it can be changed into a prime (1565740849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8961 + ... + 56672.

Almost surely, 2^1565740848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565740848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343921408).

1565740848 is an abundant number, since it is smaller than the sum of its proper divisors (3122101968).

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

1565740848 is a wasteful number, since it uses less digits than its factorization.

1565740848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65722 (or 65716 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The square root of 1565740848 is about 39569.4433622713. The cubic root of 1565740848 is about 1161.1989308369.

The spelling of 1565740848 in words is "one billion, five hundred sixty-five million, seven hundred forty thousand, eight hundred forty-eight".