1568138841 has 12 divisors (see below), whose sum is σ = 2276951040. Its totient is φ = 1039951320.

The previous prime is 1568138809. The next prime is 1568138843. The reversal of 1568138841 is 1488318651.

1568138841 is a `hidden beast` number, since 1 + 568 + 1 + 3 + 8 + 84 + 1 = 666.

It is not a de Polignac number, because 1568138841 - 2⁵ = 1568138809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1568138843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454401 + ... + 457838.

It is an arithmetic number, because the mean of its divisors is an integer number (189745920).

Almost surely, 2^1568138841 is an apocalyptic number.

It is an amenable number.

1568138841 is a deficient number, since it is larger than the sum of its proper divisors (708812199).

1568138841 is a wasteful number, since it uses less digits than its factorization.

1568138841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912436 (or 912433 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 1568138841 is about 39599.7328400079. The cubic root of 1568138841 is about 1161.7914355655.

The spelling of 1568138841 in words is "one billion, five hundred sixty-eight million, one hundred thirty-eight thousand, eight hundred forty-one".