80218841 has 2 divisors, whose sum is σ = 80218842. Its totient is φ = 80218840.

The previous prime is 80218823. The next prime is 80218861. The reversal of 80218841 is 14881208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 22762441 = 7580^2 + 4771^2 .

It is a cyclic number.

It is not a de Polignac number, because 80218841 - 2⁶ = 80218777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80218798 and 80218807.

It is not a weakly prime, because it can be changed into another prime (80218811) 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, 40109420 + 40109421.

It is an arithmetic number, because the mean of its divisors is an integer number (40109421).

Almost surely, 2^80218841 is an apocalyptic number.

It is an amenable number.

80218841 is a deficient number, since it is larger than the sum of its proper divisors (1).

80218841 is an equidigital number, since it uses as much as digits as its factorization.

80218841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 80218841 is about 8956.4971389489. The cubic root of 80218841 is about 431.2794791583.

The spelling of 80218841 in words is "eighty million, two hundred eighteen thousand, eight hundred forty-one".