3816657218 has 32 divisors (see below), whose sum is σ = 6310742400. Its totient is φ = 1716802560.

The previous prime is 3816657181. The next prime is 3816657223. The reversal of 3816657218 is 8127566183.

3816657218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3816657218² = 29133744639422999048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842696 + ... + 847212.

It is an arithmetic number, because the mean of its divisors is an integer number (197210700).

Almost surely, 2^3816657218 is an apocalyptic number.

3816657218 is a deficient number, since it is larger than the sum of its proper divisors (2494085182).

3816657218 is a wasteful number, since it uses less digits than its factorization.

3816657218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922.

The product of its digits is 483840, while the sum is 47.

The square root of 3816657218 is about 61779.1001714981. The cubic root of 3816657218 is about 1562.7675530142.

It can be divided in two parts, 381665 and 7218, that added together give a palindrome (388883).

The spelling of 3816657218 in words is "three billion, eight hundred sixteen million, six hundred fifty-seven thousand, two hundred eighteen".