80281849 has 2 divisors, whose sum is σ = 80281850. Its totient is φ = 80281848.

The previous prime is 80281843. The next prime is 80281919. The reversal of 80281849 is 94818208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76877824 + 3404025 = 8768^2 + 1845^2 .

It is a cyclic number.

It is not a de Polignac number, because 80281849 - 2³ = 80281841 is a prime.

It is not a weakly prime, because it can be changed into another prime (80281841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40140924 + 40140925.

It is an arithmetic number, because the mean of its divisors is an integer number (40140925).

Almost surely, 2^80281849 is an apocalyptic number.

It is an amenable number.

80281849 is a deficient number, since it is larger than the sum of its proper divisors (1).

80281849 is an equidigital number, since it uses as much as digits as its factorization.

80281849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 80281849 is about 8960.0138950785. The cubic root of 80281849 is about 431.3923659629.

The spelling of 80281849 in words is "eighty million, two hundred eighty-one thousand, eight hundred forty-nine".