1083561959 has 2 divisors, whose sum is σ = 1083561960. Its totient is φ = 1083561958.

The previous prime is 1083561949. The next prime is 1083561961. The reversal of 1083561959 is 9591653801.

It is a strong prime.

It is an emirp because it is prime and its reverse (9591653801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1083561959 - 2⁴ = 1083561943 is a prime.

Together with 1083561961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1083561949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541780979 + 541780980.

It is an arithmetic number, because the mean of its divisors is an integer number (541780980).

Almost surely, 2^1083561959 is an apocalyptic number.

1083561959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1083561959 is an equidigital number, since it uses as much as digits as its factorization.

1083561959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 47.

The square root of 1083561959 is about 32917.5023201943. The cubic root of 1083561959 is about 1027.1122680693.

The spelling of 1083561959 in words is "one billion, eighty-three million, five hundred sixty-one thousand, nine hundred fifty-nine".