2018682209 has 2 divisors, whose sum is σ = 2018682210. Its totient is φ = 2018682208.

The previous prime is 2018682173. The next prime is 2018682217. The reversal of 2018682209 is 9022868102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1139737600 + 878944609 = 33760^2 + 29647^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018682209 - 2⁸ = 2018681953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2018682269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009341104 + 1009341105.

It is an arithmetic number, because the mean of its divisors is an integer number (1009341105).

Almost surely, 2^2018682209 is an apocalyptic number.

It is an amenable number.

2018682209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018682209 is an equidigital number, since it uses as much as digits as its factorization.

2018682209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 2018682209 is about 44929.7474842670. The cubic root of 2018682209 is about 1263.8319158488.

The spelling of 2018682209 in words is "two billion, eighteen million, six hundred eighty-two thousand, two hundred nine".