80266181 has 2 divisors, whose sum is σ = 80266182. Its totient is φ = 80266180.

The previous prime is 80266169. The next prime is 80266187. The reversal of 80266181 is 18166208.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 2500 = 8959^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 80266181 - 2⁶ = 80266117 is a prime.

It is a super-2 number, since 2×80266181² = 12885319624649522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80266187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40133090 + 40133091.

It is an arithmetic number, because the mean of its divisors is an integer number (40133091).

Almost surely, 2^80266181 is an apocalyptic number.

It is an amenable number.

80266181 is a deficient number, since it is larger than the sum of its proper divisors (1).

80266181 is an equidigital number, since it uses as much as digits as its factorization.

80266181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 80266181 is about 8959.1395234141. The cubic root of 80266181 is about 431.3643002775.

The spelling of 80266181 in words is "eighty million, two hundred sixty-six thousand, one hundred eighty-one".