1205249083 has 2 divisors, whose sum is σ = 1205249084. Its totient is φ = 1205249082.

The previous prime is 1205249081. The next prime is 1205249113. The reversal of 1205249083 is 3809425021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205249083 - 2¹ = 1205249081 is a prime.

Together with 1205249081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1205249081) 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, 602624541 + 602624542.

It is an arithmetic number, because the mean of its divisors is an integer number (602624542).

Almost surely, 2^1205249083 is an apocalyptic number.

1205249083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205249083 is an equidigital number, since it uses as much as digits as its factorization.

1205249083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1205249083 is about 34716.6974667810. The cubic root of 1205249083 is about 1064.2057551825.

The spelling of 1205249083 in words is "one billion, two hundred five million, two hundred forty-nine thousand, eighty-three".