3648818 has 4 divisors (see below), whose sum is σ = 5473230. Its totient is φ = 1824408.

The previous prime is 3648797. The next prime is 3648833. The reversal of 3648818 is 8188463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8188463 = 433 ⋅18911.

It can be written as a sum of positive squares in only one way, i.e., 2093809 + 1555009 = 1447^2 + 1247^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912203 + ... + 912206.

Almost surely, 2^3648818 is an apocalyptic number.

3648818 is a deficient number, since it is larger than the sum of its proper divisors (1824412).

3648818 is a wasteful number, since it uses less digits than its factorization.

3648818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824411.

The product of its digits is 36864, while the sum is 38.

The square root of 3648818 is about 1910.1879488679. The cubic root of 3648818 is about 153.9515505093.

The spelling of 3648818 in words is "three million, six hundred forty-eight thousand, eight hundred eighteen".