4218046856 has 8 divisors (see below), whose sum is σ = 7908837870. Its totient is φ = 2109023424.

The previous prime is 4218046823. The next prime is 4218046871. The reversal of 4218046856 is 6586408124.

It is a happy number.

4218046856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 4104964900 + 113081956 = 64070^2 + 10634^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×4218046856² = 35583838558822969472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263627921 + ... + 263627936.

Almost surely, 2^4218046856 is an apocalyptic number.

It is an amenable number.

4218046856 is a deficient number, since it is larger than the sum of its proper divisors (3690791014).

4218046856 is a wasteful number, since it uses less digits than its factorization.

4218046856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527255863 (or 527255859 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 4218046856 is about 64946.4922532387. The cubic root of 4218046856 is about 1615.7362419982.

The spelling of 4218046856 in words is "four billion, two hundred eighteen million, forty-six thousand, eight hundred fifty-six".