3638018 has 8 divisors (see below), whose sum is σ = 5473548. Its totient is φ = 1813504.

The previous prime is 3638009. The next prime is 3638023. The reversal of 3638018 is 8108363.

It can be written as a sum of positive squares in 2 ways, for example, as 3636649 + 1369 = 1907^2 + 37^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871 + ... + 3282.

Almost surely, 2^3638018 is an apocalyptic number.

3638018 is a deficient number, since it is larger than the sum of its proper divisors (1835530).

3638018 is a wasteful number, since it uses less digits than its factorization.

3638018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 3638018 is about 1907.3589069706. The cubic root of 3638018 is about 153.7995085896.

The spelling of 3638018 in words is "three million, six hundred thirty-eight thousand, eighteen".