3643091 has 4 divisors (see below), whose sum is σ = 3653232. Its totient is φ = 3632952.

The previous prime is 3643063. The next prime is 3643099. The reversal of 3643091 is 1903463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3643091 - 2¹⁸ = 3380947 is a prime.

It is a super-2 number, since 2×3643091² = 26544224068562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3643091.

It is not an unprimeable number, because it can be changed into a prime (3643099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4511 + ... + 5256.

It is an arithmetic number, because the mean of its divisors is an integer number (913308).

Almost surely, 2^3643091 is an apocalyptic number.

3643091 is a deficient number, since it is larger than the sum of its proper divisors (10141).

3643091 is an equidigital number, since it uses as much as digits as its factorization.

3643091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140.

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

The square root of 3643091 is about 1908.6882930432. The cubic root of 3643091 is about 153.8709634797.

The spelling of 3643091 in words is "three million, six hundred forty-three thousand, ninety-one".