1081138 has 16 divisors (see below), whose sum is σ = 1782720. Its totient is φ = 489456.

The previous prime is 1081133. The next prime is 1081139. The reversal of 1081138 is 8311801.

It is not an unprimeable number, because it can be changed into a prime (1081133) 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 7 ways as a sum of consecutive naturals, for example, 256 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (111420).

2^1081138 is an apocalyptic number.

1081138 is a deficient number, since it is larger than the sum of its proper divisors (701582).

1081138 is a wasteful number, since it uses less digits than its factorization.

1081138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1081138 is about 1039.7778608915. Note that the first 3 decimals coincide. The cubic root of 1081138 is about 102.6345803106.

Adding to 1081138 its reverse (8311801), we get a palindrome (9392939).

The spelling of 1081138 in words is "one million, eighty-one thousand, one hundred thirty-eight".