1985735803 has 2 divisors, whose sum is σ = 1985735804. Its totient is φ = 1985735802.

The previous prime is 1985735729. The next prime is 1985735819. The reversal of 1985735803 is 3085375891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1985735803 - 2²⁹ = 1448864891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1985735503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992867901 + 992867902.

It is an arithmetic number, because the mean of its divisors is an integer number (992867902).

Almost surely, 2^1985735803 is an apocalyptic number.

1985735803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1985735803 is an equidigital number, since it uses as much as digits as its factorization.

1985735803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 1985735803 is about 44561.5956065310. The cubic root of 1985735803 is about 1256.9186069585.

The spelling of 1985735803 in words is "one billion, nine hundred eighty-five million, seven hundred thirty-five thousand, eight hundred three".