285164849 has 2 divisors, whose sum is σ = 285164850. Its totient is φ = 285164848.

The previous prime is 285164827. The next prime is 285164903. The reversal of 285164849 is 948461582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282475249 + 2689600 = 16807^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 285164849 - 2²⁸ = 16729393 is a prime.

It is a super-2 number, since 2×285164849² = 162637982210385602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (285164449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142582424 + 142582425.

It is an arithmetic number, because the mean of its divisors is an integer number (142582425).

Almost surely, 2^285164849 is an apocalyptic number.

It is an amenable number.

285164849 is a deficient number, since it is larger than the sum of its proper divisors (1).

285164849 is an equidigital number, since it uses as much as digits as its factorization.

285164849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 47.

The square root of 285164849 is about 16886.8247163284. The cubic root of 285164849 is about 658.2112945961.

The spelling of 285164849 in words is "two hundred eighty-five million, one hundred sixty-four thousand, eight hundred forty-nine".