1681818224 has 10 divisors (see below), whose sum is σ = 3258522840. Its totient is φ = 840909104.

The previous prime is 1681818223. The next prime is 1681818227. The reversal of 1681818224 is 4228181861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681818223) by changing a digit.

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, 52556804 + ... + 52556835.

It is an arithmetic number, because the mean of its divisors is an integer number (325852284).

Almost surely, 2^1681818224 is an apocalyptic number.

It is an amenable number.

1681818224 is a deficient number, since it is larger than the sum of its proper divisors (1576704616).

1681818224 is a wasteful number, since it uses less digits than its factorization.

1681818224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105113647 (or 105113641 counting only the distinct ones).

The product of its digits is 49152, while the sum is 41.

The square root of 1681818224 is about 41009.9771275235. The cubic root of 1681818224 is about 1189.2131002762.

The spelling of 1681818224 in words is "one billion, six hundred eighty-one million, eight hundred eighteen thousand, two hundred twenty-four".