3643138 has 8 divisors (see below), whose sum is σ = 5539788. Its totient is φ = 1796544.

The previous prime is 3643127. The next prime is 3643139. The reversal of 3643138 is 8313463.

3643138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3560769 + 82369 = 1887^2 + 287^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3643139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12331 + ... + 12622.

Almost surely, 2^3643138 is an apocalyptic number.

3643138 is a deficient number, since it is larger than the sum of its proper divisors (1896650).

3643138 is a wasteful number, since it uses less digits than its factorization.

3643138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028.

The product of its digits is 5184, while the sum is 28.

The square root of 3643138 is about 1908.7006051238. The cubic root of 3643138 is about 153.8716251801.

The spelling of 3643138 in words is "three million, six hundred forty-three thousand, one hundred thirty-eight".