1565448396 has 12 divisors (see below), whose sum is σ = 3652712952. Its totient is φ = 521816128.

The previous prime is 1565448377. The next prime is 1565448397. The reversal of 1565448396 is 6938445651.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1565448397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65227005 + ... + 65227028.

It is an arithmetic number, because the mean of its divisors is an integer number (304392746).

Almost surely, 2^1565448396 is an apocalyptic number.

It is an amenable number.

1565448396 is an abundant number, since it is smaller than the sum of its proper divisors (2087264556).

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

1565448396 is a wasteful number, since it uses less digits than its factorization.

1565448396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130454040 (or 130454038 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 51.

The square root of 1565448396 is about 39565.7477624270. The cubic root of 1565448396 is about 1161.1266293668.

The spelling of 1565448396 in words is "one billion, five hundred sixty-five million, four hundred forty-eight thousand, three hundred ninety-six".