3641591 has 2 divisors, whose sum is σ = 3641592. Its totient is φ = 3641590.

The previous prime is 3641569. The next prime is 3641593. The reversal of 3641591 is 1951463.

It is a strong prime.

It is an emirp because it is prime and its reverse (1951463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3641591 is a prime.

It is a super-2 number, since 2×3641591² = 26522370022562, which contains 22 as substring.

Together with 3641593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3641593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820795 + 1820796.

It is an arithmetic number, because the mean of its divisors is an integer number (1820796).

Almost surely, 2^3641591 is an apocalyptic number.

3641591 is a deficient number, since it is larger than the sum of its proper divisors (1).

3641591 is an equidigital number, since it uses as much as digits as its factorization.

3641591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 3641591 is about 1908.2953125761. The cubic root of 3641591 is about 153.8498423923.

The spelling of 3641591 in words is "three million, six hundred forty-one thousand, five hundred ninety-one".