4081018656 has 384 divisors, whose sum is σ = 13168189440. Its totient is φ = 1090252800.

The previous prime is 4081018631. The next prime is 4081018679. The reversal of 4081018656 is 6568101804.

It is a super-3 number, since 3×4081018656³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51658425 + ... + 51658503.

It is an arithmetic number, because the mean of its divisors is an integer number (34292160).

Almost surely, 2^4081018656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4081018656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6584094720).

4081018656 is an abundant number, since it is smaller than the sum of its proper divisors (9087170784).

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

4081018656 is a wasteful number, since it uses less digits than its factorization.

4081018656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 4081018656 is about 63882.8510321823. The cubic root of 4081018656 is about 1598.0469210634.

The spelling of 4081018656 in words is "four billion, eighty-one million, eighteen thousand, six hundred fifty-six".