3681199 has 2 divisors, whose sum is σ = 3681200. Its totient is φ = 3681198.

The previous prime is 3681191. The next prime is 3681217. The reversal of 3681199 is 9911863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3681199 - 2³ = 3681191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3681191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840599 + 1840600.

It is an arithmetic number, because the mean of its divisors is an integer number (1840600).

Almost surely, 2^3681199 is an apocalyptic number.

3681199 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681199 is an equidigital number, since it uses as much as digits as its factorization.

3681199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 3681199 is about 1918.6450948521. The cubic root of 3681199 is about 154.4056181791.

The spelling of 3681199 in words is "three million, six hundred eighty-one thousand, one hundred ninety-nine".