3621818 has 8 divisors (see below), whose sum is σ = 5718720. Its totient is φ = 1715580.

The previous prime is 3621803. The next prime is 3621851. The reversal of 3621818 is 8181263.

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

3621818 is a modest number, since divided by 1818 gives 362 as remainder.

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 in 3 ways as a sum of consecutive naturals, for example, 47618 + ... + 47693.

It is an arithmetic number, because the mean of its divisors is an integer number (714840).

Almost surely, 2^3621818 is an apocalyptic number.

3621818 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3621818 is a deficient number, since it is larger than the sum of its proper divisors (2096902).

3621818 is a wasteful number, since it uses less digits than its factorization.

3621818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95332.

The product of its digits is 2304, while the sum is 29.

The square root of 3621818 is about 1903.1074588683. The cubic root of 3621818 is about 153.5708804843.

The spelling of 3621818 in words is "three million, six hundred twenty-one thousand, eight hundred eighteen".