4018865040 has 120 divisors (see below), whose sum is σ = 13572524160. Its totient is φ = 1065676032.

The previous prime is 4018865033. The next prime is 4018865077. The reversal of 4018865040 is 405688104.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4018864986 and 4018865004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113289 + ... + 144471.

It is an arithmetic number, because the mean of its divisors is an integer number (113104368).

Almost surely, 2^4018865040 is an apocalyptic number.

4018865040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4018865040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6786262080).

4018865040 is an abundant number, since it is smaller than the sum of its proper divisors (9553659120).

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

4018865040 is a wasteful number, since it uses less digits than its factorization.

4018865040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31381 (or 31372 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 4018865040 is about 63394.5190059835. The cubic root of 4018865040 is about 1589.8926710511.

The spelling of 4018865040 in words is "four billion, eighteen million, eight hundred sixty-five thousand, forty".