3681443 has 2 divisors, whose sum is σ = 3681444. Its totient is φ = 3681442.

The previous prime is 3681413. The next prime is 3681451. The reversal of 3681443 is 3441863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3681443 - 2¹² = 3677347 is a prime.

It is not a weakly prime, because it can be changed into another prime (3681413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840721 + 1840722.

It is an arithmetic number, because the mean of its divisors is an integer number (1840722).

Almost surely, 2^3681443 is an apocalyptic number.

3681443 is a deficient number, since it is larger than the sum of its proper divisors (1).

3681443 is an equidigital number, since it uses as much as digits as its factorization.

3681443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 3681443 is about 1918.7086803369. The cubic root of 3681443 is about 154.4090295801.

The spelling of 3681443 in words is "three million, six hundred eighty-one thousand, four hundred forty-three".