1138522856 has 32 divisors (see below), whose sum is σ = 2195168040. Its totient is φ = 553183488.

The previous prime is 1138522837. The next prime is 1138522859. The reversal of 1138522856 is 6582258311.

It can be written as a sum of positive squares in 4 ways, for example, as 472366756 + 666156100 = 21734^2 + 25810^2 .

It is not an unprimeable number, because it can be changed into a prime (1138522859) 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 7 ways as a sum of consecutive naturals, for example, 297950 + ... + 301746.

Almost surely, 2^1138522856 is an apocalyptic number.

It is an amenable number.

1138522856 is a deficient number, since it is larger than the sum of its proper divisors (1056645184).

1138522856 is a wasteful number, since it uses less digits than its factorization.

1138522856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853 (or 4849 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 1138522856 is about 33742.0043269513. The cubic root of 1138522856 is about 1044.1925360416.

The spelling of 1138522856 in words is "one billion, one hundred thirty-eight million, five hundred twenty-two thousand, eight hundred fifty-six".