1081127638 has 16 divisors (see below), whose sum is σ = 1631056896. Its totient is φ = 537448680.

The previous prime is 1081127633. The next prime is 1081127653. The reversal of 1081127638 is 8367211801.

It is a junction number, because it is equal to n+sod(n) for n = 1081127597 and 1081127606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081127633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687393 + ... + 688963.

It is an arithmetic number, because the mean of its divisors is an integer number (101941056).

Almost surely, 2^1081127638 is an apocalyptic number.

1081127638 is a deficient number, since it is larger than the sum of its proper divisors (549929258).

1081127638 is a wasteful number, since it uses less digits than its factorization.

1081127638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1081127638 is about 32880.5054401540. The cubic root of 1081127638 is about 1026.3425241449.

The spelling of 1081127638 in words is "one billion, eighty-one million, one hundred twenty-seven thousand, six hundred thirty-eight".