1081158 has 32 divisors (see below), whose sum is σ = 2370816. Its totient is φ = 326688.

The previous prime is 1081153. The next prime is 1081163. The reversal of 1081158 is 8511801.

1081158 = 32² + 33² + ... + 148².

It is an interprime number because it is at equal distance from previous prime (1081153) and next prime (1081163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081153) 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 15 ways as a sum of consecutive naturals, for example, 6391 + ... + 6557.

It is an arithmetic number, because the mean of its divisors is an integer number (74088).

2^1081158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185408).

1081158 is an abundant number, since it is smaller than the sum of its proper divisors (1289658).

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

1081158 is a wasteful number, since it uses less digits than its factorization.

1081158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 1081158 is about 1039.7874782858. The cubic root of 1081158 is about 102.6352131866.

Adding to 1081158 its reverse (8511801), we get a palindrome (9592959).

The spelling of 1081158 in words is "one million, eighty-one thousand, one hundred fifty-eight".