1568987868 has 48 divisors (see below), whose sum is σ = 4430087424. Its totient is φ = 421912320.

The previous prime is 1568987837. The next prime is 1568987869. The reversal of 1568987868 is 8687898651.

It is a junction number, because it is equal to n+sod(n) for n = 1568987799 and 1568987808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1568987869) 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 15 ways as a sum of consecutive naturals, for example, 547938 + ... + 550793.

It is an arithmetic number, because the mean of its divisors is an integer number (92293488).

Almost surely, 2^1568987868 is an apocalyptic number.

It is an amenable number.

1568987868 is an abundant number, since it is smaller than the sum of its proper divisors (2861099556).

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

1568987868 is a wasteful number, since it uses less digits than its factorization.

1568987868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098762 (or 1098760 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 66.

The square root of 1568987868 is about 39610.4514995727. The cubic root of 1568987868 is about 1162.0010714103.

The spelling of 1568987868 in words is "one billion, five hundred sixty-eight million, nine hundred eighty-seven thousand, eight hundred sixty-eight".