280082161 has 2 divisors, whose sum is σ = 280082162. Its totient is φ = 280082160.

The previous prime is 280082141. The next prime is 280082167. The reversal of 280082161 is 161280082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255520225 + 24561936 = 15985^2 + 4956^2 .

It is a cyclic number.

It is not a de Polignac number, because 280082161 - 2⁵ = 280082129 is a prime.

It is a Chen prime.

It is equal to p_15230287 and since 280082161 and 15230287 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (280082167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140041080 + 140041081.

It is an arithmetic number, because the mean of its divisors is an integer number (140041081).

Almost surely, 2^280082161 is an apocalyptic number.

It is an amenable number.

280082161 is a deficient number, since it is larger than the sum of its proper divisors (1).

280082161 is an equidigital number, since it uses as much as digits as its factorization.

280082161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 280082161 is about 16735.6553800561. The cubic root of 280082161 is about 654.2772448464.

The spelling of 280082161 in words is "two hundred eighty million, eighty-two thousand, one hundred sixty-one".