3208166861 has 2 divisors, whose sum is σ = 3208166862. Its totient is φ = 3208166860.

The previous prime is 3208166851. The next prime is 3208166869. The reversal of 3208166861 is 1686618023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3175322500 + 32844361 = 56350^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 3208166861 - 2³⁰ = 2134425037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3208166869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604083430 + 1604083431.

It is an arithmetic number, because the mean of its divisors is an integer number (1604083431).

Almost surely, 2^3208166861 is an apocalyptic number.

It is an amenable number.

3208166861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208166861 is an equidigital number, since it uses as much as digits as its factorization.

3208166861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 3208166861 is about 56640.6820315575. The cubic root of 3208166861 is about 1474.8651583715.

The spelling of 3208166861 in words is "three billion, two hundred eight million, one hundred sixty-six thousand, eight hundred sixty-one".