1081783 has 4 divisors (see below), whose sum is σ = 1102248. Its totient is φ = 1061320.

The previous prime is 1081781. The next prime is 1081789. The reversal of 1081783 is 3871801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1081783 - 2¹ = 1081781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10153 + ... + 10258.

It is an arithmetic number, because the mean of its divisors is an integer number (275562).

2^1081783 is an apocalyptic number.

1081783 is a deficient number, since it is larger than the sum of its proper divisors (20465).

1081783 is an equidigital number, since it uses as much as digits as its factorization.

1081783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20464.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1081783 is about 1040.0879770481. The cubic root of 1081783 is about 102.6549866306.

It can be divided in two parts, 108 and 1783, that added together give a triangular number (1891 = T₆₁).

The spelling of 1081783 in words is "one million, eighty-one thousand, seven hundred eighty-three".