2018671217 has 2 divisors, whose sum is σ = 2018671218. Its totient is φ = 2018671216.

The previous prime is 2018671043. The next prime is 2018671243. The reversal of 2018671217 is 7121768102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2009190976 + 9480241 = 44824^2 + 3079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2018671217 - 2¹⁸ = 2018409073 is a prime.

It is a super-2 number, since 2×2018671217² = 8150066964688522178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2018671297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1009335608 + 1009335609.

It is an arithmetic number, because the mean of its divisors is an integer number (1009335609).

Almost surely, 2^2018671217 is an apocalyptic number.

It is an amenable number.

2018671217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2018671217 is an equidigital number, since it uses as much as digits as its factorization.

2018671217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 2018671217 is about 44929.6251597985. The cubic root of 2018671217 is about 1263.8296219323.

The spelling of 2018671217 in words is "two billion, eighteen million, six hundred seventy-one thousand, two hundred seventeen".