1995565568 has 40 divisors (see below), whose sum is σ = 3994328052. Its totient is φ = 996007936.

The previous prime is 1995565541. The next prime is 1995565589. The reversal of 1995565568 is 8655655991.

It can be written as a sum of positive squares in 2 ways, for example, as 1834580224 + 160985344 = 42832^2 + 12688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312746 + ... + 319062.

Almost surely, 2^1995565568 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 1995565568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997164026).

1995565568 is an abundant number, since it is smaller than the sum of its proper divisors (1998762484).

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

1995565568 is an frugal number, since it uses more digits than its factorization.

1995565568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952 (or 6936 counting only the distinct ones).

The product of its digits is 14580000, while the sum is 59.

The square root of 1995565568 is about 44671.7535809822. The cubic root of 1995565568 is about 1258.9891884723.

The spelling of 1995565568 in words is "one billion, nine hundred ninety-five million, five hundred sixty-five thousand, five hundred sixty-eight".