1081958 has 8 divisors (see below), whose sum is σ = 1631928. Its totient is φ = 537984.

The previous prime is 1081939. The next prime is 1081979. The reversal of 1081958 is 8591801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1081958² = 2341266227528, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (203991).

2^1081958 is an apocalyptic number.

1081958 is a deficient number, since it is larger than the sum of its proper divisors (549970).

1081958 is a wasteful number, since it uses less digits than its factorization.

1081958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1081958 is about 1040.1721011448. The cubic root of 1081958 is about 102.6605218301.

The spelling of 1081958 in words is "one million, eighty-one thousand, nine hundred fifty-eight".