3649541 has 4 divisors (see below), whose sum is σ = 4170912. Its totient is φ = 3128172.

The previous prime is 3649531. The next prime is 3649549. The reversal of 3649541 is 1459463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1459463 = 43 ⋅33941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3649498 and 3649507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649549) 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, 260675 + ... + 260688.

It is an arithmetic number, because the mean of its divisors is an integer number (1042728).

Almost surely, 2^3649541 is an apocalyptic number.

It is an amenable number.

3649541 is a deficient number, since it is larger than the sum of its proper divisors (521371).

3649541 is an equidigital number, since it uses as much as digits as its factorization.

3649541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521370.

The product of its digits is 12960, while the sum is 32.

The square root of 3649541 is about 1910.3771878873. The cubic root of 3649541 is about 153.9617181508.

The spelling of 3649541 in words is "three million, six hundred forty-nine thousand, five hundred forty-one".