3998226418668 has 36 divisors (see below), whose sum is σ = 10272310321728. Its totient is φ = 1310893907040.

The previous prime is 3998226418639. The next prime is 3998226418757. The reversal of 3998226418668 is 8668146228993.

It is a happy number.

3998226418668 is a `hidden beast` number, since 399 + 8 + 226 + 4 + 1 + 8 + 6 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 3998226418596 and 3998226418605.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 910340796 + ... + 910345187.

Almost surely, 2^{3998226418668} is an apocalyptic number.

It is an amenable number.

3998226418668 is an abundant number, since it is smaller than the sum of its proper divisors (6274083903060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3998226418668 is a wasteful number, since it uses less digits than its factorization.

3998226418668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820686054 (or 1820686049 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 72.

The spelling of 3998226418668 in words is "three trillion, nine hundred ninety-eight billion, two hundred twenty-six million, four hundred eighteen thousand, six hundred sixty-eight".