4021868818 has 8 divisors (see below), whose sum is σ = 6581239920. Its totient is φ = 1828122180.

The previous prime is 4021868797. The next prime is 4021868827. The reversal of 4021868818 is 8188681204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91406088 + ... + 91406131.

It is an arithmetic number, because the mean of its divisors is an integer number (822654990).

Almost surely, 2^4021868818 is an apocalyptic number.

4021868818 is a deficient number, since it is larger than the sum of its proper divisors (2559371102).

4021868818 is a wasteful number, since it uses less digits than its factorization.

4021868818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182812232.

The product of its (nonzero) digits is 196608, while the sum is 46.

The square root of 4021868818 is about 63418.2057299006. The cubic root of 4021868818 is about 1590.2886779885.

The spelling of 4021868818 in words is "four billion, twenty-one million, eight hundred sixty-eight thousand, eight hundred eighteen".