3691043 has 2 divisors, whose sum is σ = 3691044. Its totient is φ = 3691042.

The previous prime is 3691031. The next prime is 3691087. The reversal of 3691043 is 3401963.

It is a weak prime.

It is an emirp because it is prime and its reverse (3401963) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3691043 - 2⁴ = 3691027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (3691003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1845521 + 1845522.

It is an arithmetic number, because the mean of its divisors is an integer number (1845522).

Almost surely, 2^3691043 is an apocalyptic number.

3691043 is a deficient number, since it is larger than the sum of its proper divisors (1).

3691043 is an equidigital number, since it uses as much as digits as its factorization.

3691043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 3691043 is about 1921.2087341047. The cubic root of 3691043 is about 154.5431291776.

The spelling of 3691043 in words is "three million, six hundred ninety-one thousand, forty-three".