481664218 has 12 divisors (see below), whose sum is σ = 840455082. Its totient is φ = 206427480.

The previous prime is 481664203. The next prime is 481664221. The reversal of 481664218 is 812466184.

It can be written as a sum of positive squares in only one way, i.e., 426711649 + 54952569 = 20657^2 + 7413^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2457373 + ... + 2457568.

Almost surely, 2^481664218 is an apocalyptic number.

481664218 is a deficient number, since it is larger than the sum of its proper divisors (358790864).

481664218 is a wasteful number, since it uses less digits than its factorization.

481664218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914957 (or 4914950 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 481664218 is about 21946.8498422894. The cubic root of 481664218 is about 783.8773724021.

The spelling of 481664218 in words is "four hundred eighty-one million, six hundred sixty-four thousand, two hundred eighteen".