286166081 has 2 divisors, whose sum is σ = 286166082. Its totient is φ = 286166080.

The previous prime is 286166077. The next prime is 286166119. The reversal of 286166081 is 180661682.

It is an a-pointer prime, because the next prime (286166119) can be obtained adding 286166081 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 71250481 = 14660^2 + 8441^2 .

It is a cyclic number.

It is not a de Polignac number, because 286166081 - 2² = 286166077 is a prime.

It is a super-2 number, since 2×286166081² = 163782051829797122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (286166681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143083040 + 143083041.

It is an arithmetic number, because the mean of its divisors is an integer number (143083041).

Almost surely, 2^286166081 is an apocalyptic number.

It is an amenable number.

286166081 is a deficient number, since it is larger than the sum of its proper divisors (1).

286166081 is an equidigital number, since it uses as much as digits as its factorization.

286166081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 286166081 is about 16916.4441003421. Note that the first 3 decimals coincide. The cubic root of 286166081 is about 658.9807354119.

The spelling of 286166081 in words is "two hundred eighty-six million, one hundred sixty-six thousand, eighty-one".