80818193 has 2 divisors, whose sum is σ = 80818194. Its totient is φ = 80818192.

The previous prime is 80818189. The next prime is 80818207. The reversal of 80818193 is 39181808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80694289 + 123904 = 8983^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 80818193 - 2² = 80818189 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80818183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40409096 + 40409097.

It is an arithmetic number, because the mean of its divisors is an integer number (40409097).

Almost surely, 2^80818193 is an apocalyptic number.

It is an amenable number.

80818193 is a deficient number, since it is larger than the sum of its proper divisors (1).

80818193 is an equidigital number, since it uses as much as digits as its factorization.

80818193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 80818193 is about 8989.8939370829. The cubic root of 80818193 is about 432.3509112244.

The spelling of 80818193 in words is "eighty million, eight hundred eighteen thousand, one hundred ninety-three".