3649538 has 8 divisors (see below), whose sum is σ = 5524860. Its totient is φ = 1807920.

The previous prime is 3649531. The next prime is 3649549. The reversal of 3649538 is 8359463.

It can be written as a sum of positive squares in 2 ways, for example, as 3052009 + 597529 = 1747^2 + 773^2 .

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

It is a super-2 number, since 2×3649538² = 26638255226888, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁴ + 6⁸ + 4⁷ + 9² + 5⁹ + 3⁵ + 8 .

It is not an unprimeable number, because it can be changed into a prime (3649531) 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, 8153 + ... + 8588.

Almost surely, 2^3649538 is an apocalyptic number.

3649538 is a deficient number, since it is larger than the sum of its proper divisors (1875322).

3649538 is a wasteful number, since it uses less digits than its factorization.

3649538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16852.

The product of its digits is 77760, while the sum is 38.

The square root of 3649538 is about 1910.3764027018. The cubic root of 3649538 is about 153.9616759642.

The spelling of 3649538 in words is "three million, six hundred forty-nine thousand, five hundred thirty-eight".