1565394048 has 96 divisors (see below), whose sum is σ = 4534920000. Its totient is φ = 518284800.

The previous prime is 1565394041. The next prime is 1565394071. The reversal of 1565394048 is 8404935651.

1565394048 is a `hidden beast` number, since 1 + 565 + 3 + 9 + 40 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1565393994 and 1565394012.

It is not an unprimeable number, because it can be changed into a prime (1565394041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169453 + ... + 178451.

It is an arithmetic number, because the mean of its divisors is an integer number (47238750).

Almost surely, 2^1565394048 is an apocalyptic number.

1565394048 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 1565394048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267460000).

1565394048 is an abundant number, since it is smaller than the sum of its proper divisors (2969525952).

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

1565394048 is a wasteful number, since it uses less digits than its factorization.

1565394048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9170 (or 9155 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 1565394048 is about 39565.0609502879. The cubic root of 1565394048 is about 1161.1131921858.

The spelling of 1565394048 in words is "one billion, five hundred sixty-five million, three hundred ninety-four thousand, forty-eight".