1083605839 has 4 divisors (see below), whose sum is σ = 1089279360. Its totient is φ = 1077932320.

The previous prime is 1083605819. The next prime is 1083605843. The reversal of 1083605839 is 9385063801.

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 1083605839 - 2¹⁷ = 1083474767 is a prime.

It is a super-2 number, since 2×1083605839² = 2348403228629787842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1083605795 and 1083605804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083605819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2836474 + ... + 2836855.

It is an arithmetic number, because the mean of its divisors is an integer number (272319840).

Almost surely, 2^1083605839 is an apocalyptic number.

1083605839 is a deficient number, since it is larger than the sum of its proper divisors (5673521).

1083605839 is an equidigital number, since it uses as much as digits as its factorization.

1083605839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673520.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1083605839 is about 32918.1688281715. The cubic root of 1083605839 is about 1027.1261325519.

The spelling of 1083605839 in words is "one billion, eighty-three million, six hundred five thousand, eight hundred thirty-nine".