1081859 has 2 divisors, whose sum is σ = 1081860. Its totient is φ = 1081858.

The previous prime is 1081853. The next prime is 1081891. The reversal of 1081859 is 9581801.

It is a happy number.

It is an a-pointer prime, because the next prime (1081891) can be obtained adding 1081859 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (9581801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1081859 - 2¹² = 1077763 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540929 + 540930.

It is an arithmetic number, because the mean of its divisors is an integer number (540930).

2^1081859 is an apocalyptic number.

1081859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081859 is an equidigital number, since it uses as much as digits as its factorization.

1081859 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1081859 is about 1040.1245117773. The cubic root of 1081859 is about 102.6573905620.

The spelling of 1081859 in words is "one million, eighty-one thousand, eight hundred fifty-nine".