4125726638 has 16 divisors (see below), whose sum is σ = 6753248640. Its totient is φ = 1874758200.

The previous prime is 4125726607. The next prime is 4125726653. The reversal of 4125726638 is 8366275214.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49943 + ... + 103661.

It is an arithmetic number, because the mean of its divisors is an integer number (422078040).

Almost surely, 2^4125726638 is an apocalyptic number.

4125726638 is a deficient number, since it is larger than the sum of its proper divisors (2627522002).

4125726638 is a wasteful number, since it uses less digits than its factorization.

4125726638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57223.

The product of its digits is 483840, while the sum is 44.

The square root of 4125726638 is about 64231.8195133845. The cubic root of 4125726638 is about 1603.8613298257.

The spelling of 4125726638 in words is "four billion, one hundred twenty-five million, seven hundred twenty-six thousand, six hundred thirty-eight".