3281818 has 8 divisors (see below), whose sum is σ = 4985280. Its totient is φ = 1620060.

The previous prime is 3281791. The next prime is 3281821. The reversal of 3281818 is 8181823.

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

3281818 is a modest number, since divided by 1818 gives 328 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 3281818.

It is a congruent number.

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, 10228 + ... + 10543.

It is an arithmetic number, because the mean of its divisors is an integer number (623160).

Almost surely, 2^3281818 is an apocalyptic number.

3281818 is a deficient number, since it is larger than the sum of its proper divisors (1703462).

3281818 is a wasteful number, since it uses less digits than its factorization.

3281818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20852.

The product of its digits is 3072, while the sum is 31.

The square root of 3281818 is about 1811.5788693844. The cubic root of 3281818 is about 148.6066226677.

The spelling of 3281818 in words is "three million, two hundred eighty-one thousand, eight hundred eighteen".