3818202217 has 2 divisors, whose sum is σ = 3818202218. Its totient is φ = 3818202216.

The previous prime is 3818202187. The next prime is 3818202229. The reversal of 3818202217 is 7122028183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2011612201 + 1806590016 = 44851^2 + 42504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3818202217 is a prime.

It is not a weakly prime, because it can be changed into another prime (3818202257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909101108 + 1909101109.

It is an arithmetic number, because the mean of its divisors is an integer number (1909101109).

Almost surely, 2^3818202217 is an apocalyptic number.

It is an amenable number.

3818202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818202217 is an equidigital number, since it uses as much as digits as its factorization.

3818202217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 3818202217 is about 61791.6031269622. The cubic root of 3818202217 is about 1562.9783962072.

The spelling of 3818202217 in words is "three billion, eight hundred eighteen million, two hundred two thousand, two hundred seventeen".