1081938 has 48 divisors (see below), whose sum is σ = 2582496. Its totient is φ = 299520.

The previous prime is 1081937. The next prime is 1081939. The reversal of 1081938 is 8391801.

It is an interprime number because it is at equal distance from previous prime (1081937) and next prime (1081939).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11106 + ... + 11202.

It is an arithmetic number, because the mean of its divisors is an integer number (53802).

2^1081938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291248).

1081938 is an abundant number, since it is smaller than the sum of its proper divisors (1500558).

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

1081938 is a wasteful number, since it uses less digits than its factorization.

1081938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1081938 is about 1040.1624873067. The cubic root of 1081938 is about 102.6598892661.

The spelling of 1081938 in words is "one million, eighty-one thousand, nine hundred thirty-eight".