1083861853 has 2 divisors, whose sum is σ = 1083861854. Its totient is φ = 1083861852.

The previous prime is 1083861839. The next prime is 1083861887. The reversal of 1083861853 is 3581683801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744307524 + 339554329 = 27282^2 + 18427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1083861853 - 2²¹ = 1081764701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1083861803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541930926 + 541930927.

It is an arithmetic number, because the mean of its divisors is an integer number (541930927).

Almost surely, 2^1083861853 is an apocalyptic number.

It is an amenable number.

1083861853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1083861853 is an equidigital number, since it uses as much as digits as its factorization.

1083861853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1083861853 is about 32922.0572413086. The cubic root of 1083861853 is about 1027.2070161949.

The spelling of 1083861853 in words is "one billion, eighty-three million, eight hundred sixty-one thousand, eight hundred fifty-three".