3681619 has 2 divisors, whose sum is σ = 3681620. Its totient is φ = 3681618.

The previous prime is 3681599. The next prime is 3681683. The reversal of 3681619 is 9161863.

3681619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3681619 is a prime.

It is a super-2 number, since 2×3681619² = 27108636922322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3681319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840809 + 1840810.

It is an arithmetic number, because the mean of its divisors is an integer number (1840810).

Almost surely, 2^3681619 is an apocalyptic number.

3681619 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681619 is an equidigital number, since it uses as much as digits as its factorization.

3681619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 3681619 is about 1918.7545439686. The cubic root of 3681619 is about 154.4114901693.

The spelling of 3681619 in words is "three million, six hundred eighty-one thousand, six hundred nineteen".