4065109638 has 32 divisors (see below), whose sum is σ = 8169112320. Its totient is φ = 1348570080.

The previous prime is 4065109583. The next prime is 4065109651. The reversal of 4065109638 is 8369015604.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4065109638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1406631 + ... + 1409517.

It is an arithmetic number, because the mean of its divisors is an integer number (255284760).

Almost surely, 2^4065109638 is an apocalyptic number.

4065109638 is an abundant number, since it is smaller than the sum of its proper divisors (4104002682).

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

4065109638 is a wasteful number, since it uses less digits than its factorization.

4065109638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 4065109638 is about 63758.2123181006. The cubic root of 4065109638 is about 1595.9676636497.

The spelling of 4065109638 in words is "four billion, sixty-five million, one hundred nine thousand, six hundred thirty-eight".