4018663860 has 24 divisors (see below), whose sum is σ = 11252258976. Its totient is φ = 1071643680.

The previous prime is 4018663823. The next prime is 4018663867. The reversal of 4018663860 is 683668104.

It is a happy number.

It is a super-2 number, since 2×4018663860² = 32299318439340199200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4018663867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33488806 + ... + 33488925.

It is an arithmetic number, because the mean of its divisors is an integer number (468844124).

Almost surely, 2^4018663860 is an apocalyptic number.

It is an amenable number.

4018663860 is an abundant number, since it is smaller than the sum of its proper divisors (7233595116).

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

4018663860 is a wasteful number, since it uses less digits than its factorization.

4018663860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66977743 (or 66977741 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 4018663860 is about 63392.9322558911. The cubic root of 4018663860 is about 1589.8661411775.

The spelling of 4018663860 in words is "four billion, eighteen million, six hundred sixty-three thousand, eight hundred sixty".