1285082783 has 2 divisors, whose sum is σ = 1285082784. Its totient is φ = 1285082782.

The previous prime is 1285082759. The next prime is 1285082801. The reversal of 1285082783 is 3872805821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285082783 - 2⁶ = 1285082719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1285082723) 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, 642541391 + 642541392.

It is an arithmetic number, because the mean of its divisors is an integer number (642541392).

Almost surely, 2^1285082783 is an apocalyptic number.

1285082783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285082783 is an equidigital number, since it uses as much as digits as its factorization.

1285082783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 1285082783 is about 35848.0513138441. The cubic root of 1285082783 is about 1087.2023147512.

The spelling of 1285082783 in words is "one billion, two hundred eighty-five million, eighty-two thousand, seven hundred eighty-three".