4168018440 has 48 divisors (see below), whose sum is σ = 13546061100. Its totient is φ = 1111471488.

The previous prime is 4168018399. The next prime is 4168018451. The reversal of 4168018440 is 448108614.

4168018440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3797763876 + 370254564 = 61626^2 + 19242^2 .

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 = 4168018395 and 4168018404.

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, 5788555 + ... + 5789274.

Almost surely, 2^4168018440 is an apocalyptic number.

4168018440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4168018440 is an abundant number, since it is smaller than the sum of its proper divisors (9378042660).

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

4168018440 is a wasteful number, since it uses less digits than its factorization.

4168018440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11577846 (or 11577839 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 4168018440 is about 64560.1923788955. The cubic root of 4168018440 is about 1609.3229719015.

The spelling of 4168018440 in words is "four billion, one hundred sixty-eight million, eighteen thousand, four hundred forty".