285103849 has 2 divisors, whose sum is σ = 285103850. Its totient is φ = 285103848.

The previous prime is 285103823. The next prime is 285103853. The reversal of 285103849 is 948301582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270010624 + 15093225 = 16432^2 + 3885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285103849 is a prime.

It is a super-2 number, since 2×285103849² = 162568409429229602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (285103879) 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, 142551924 + 142551925.

It is an arithmetic number, because the mean of its divisors is an integer number (142551925).

Almost surely, 2^285103849 is an apocalyptic number.

It is an amenable number.

285103849 is a deficient number, since it is larger than the sum of its proper divisors (1).

285103849 is an equidigital number, since it uses as much as digits as its factorization.

285103849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 285103849 is about 16885.0184779289. The cubic root of 285103849 is about 658.1643582920.

The spelling of 285103849 in words is "two hundred eighty-five million, one hundred three thousand, eight hundred forty-nine".