3920080638 has 32 divisors (see below), whose sum is σ = 8026736256. Its totient is φ = 1275630048.

The previous prime is 3920080573. The next prime is 3920080639. The reversal of 3920080638 is 8360800293.

It is a junction number, because it is equal to n+sod(n) for n = 3920080596 and 3920080605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920080639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781045 + ... + 786047.

It is an arithmetic number, because the mean of its divisors is an integer number (250835508).

Almost surely, 2^3920080638 is an apocalyptic number.

3920080638 is an abundant number, since it is smaller than the sum of its proper divisors (4106655618).

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

3920080638 is a wasteful number, since it uses less digits than its factorization.

3920080638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8088.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 3920080638 is about 62610.5473382880. The cubic root of 3920080638 is about 1576.7578442584.

The spelling of 3920080638 in words is "three billion, nine hundred twenty million, eighty thousand, six hundred thirty-eight".