4066409718 has 48 divisors (see below), whose sum is σ = 10166996736. Its totient is φ = 1150547760.

The previous prime is 4066409693. The next prime is 4066409719. The reversal of 4066409718 is 8179046604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066409719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143688 + ... + 169643.

It is an arithmetic number, because the mean of its divisors is an integer number (211812432).

Almost surely, 2^4066409718 is an apocalyptic number.

4066409718 is an abundant number, since it is smaller than the sum of its proper divisors (6100587018).

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

4066409718 is a wasteful number, since it uses less digits than its factorization.

4066409718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313449 (or 313446 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 4066409718 is about 63768.4068955780. The cubic root of 4066409718 is about 1596.1377832505.

The spelling of 4066409718 in words is "four billion, sixty-six million, four hundred nine thousand, seven hundred eighteen".