3681449 has 8 divisors (see below), whose sum is σ = 3900480. Its totient is φ = 3467376.

The previous prime is 3681443. The next prime is 3681451. The reversal of 3681449 is 9441863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3681449 - 2¹² = 3677353 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3681443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347 + ... + 2735.

It is an arithmetic number, because the mean of its divisors is an integer number (487560).

Almost surely, 2^3681449 is an apocalyptic number.

It is an amenable number.

3681449 is a deficient number, since it is larger than the sum of its proper divisors (219031).

3681449 is a wasteful number, since it uses less digits than its factorization.

3681449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479.

The product of its digits is 20736, while the sum is 35.

The square root of 3681449 is about 1918.7102438878. The cubic root of 3681449 is about 154.4091134651.

It can be divided in two parts, 36814 and 49, that added together give a palindrome (36863).

The spelling of 3681449 in words is "three million, six hundred eighty-one thousand, four hundred forty-nine".