80280191 has 2 divisors, whose sum is σ = 80280192. Its totient is φ = 80280190.

The previous prime is 80280181. The next prime is 80280199. The reversal of 80280191 is 19108208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80280191 - 2⁶ = 80280127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80280199) 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, 40140095 + 40140096.

It is an arithmetic number, because the mean of its divisors is an integer number (40140096).

Almost surely, 2^80280191 is an apocalyptic number.

80280191 is a deficient number, since it is larger than the sum of its proper divisors (1).

80280191 is an equidigital number, since it uses as much as digits as its factorization.

80280191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 80280191 is about 8959.9213724229. The cubic root of 80280191 is about 431.3893962029.

Adding to 80280191 its reverse (19108208), we get a palindrome (99388399).

The spelling of 80280191 in words is "eighty million, two hundred eighty thousand, one hundred ninety-one".