4218862666 has 16 divisors (see below), whose sum is σ = 6379374024. Its totient is φ = 2092428544.

The previous prime is 4218862651. The next prime is 4218862691. The reversal of 4218862666 is 6662688124.

It can be written as a sum of positive squares in 4 ways, for example, as 4079504641 + 139358025 = 63871^2 + 11805^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403926 + ... + 414238.

Almost surely, 2^4218862666 is an apocalyptic number.

4218862666 is a deficient number, since it is larger than the sum of its proper divisors (2160511358).

4218862666 is a wasteful number, since it uses less digits than its factorization.

4218862666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945.

The product of its digits is 1327104, while the sum is 49.

The square root of 4218862666 is about 64952.7725813148. The cubic root of 4218862666 is about 1615.8404014871.

The spelling of 4218862666 in words is "four billion, two hundred eighteen million, eight hundred sixty-two thousand, six hundred sixty-six".