3920505673 has 4 divisors (see below), whose sum is σ = 4480577920. Its totient is φ = 3360433428.

The previous prime is 3920505653. The next prime is 3920505683. The reversal of 3920505673 is 3765050293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3920505673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3920505623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280036113 + ... + 280036126.

It is an arithmetic number, because the mean of its divisors is an integer number (1120144480).

Almost surely, 2^3920505673 is an apocalyptic number.

It is an amenable number.

3920505673 is a deficient number, since it is larger than the sum of its proper divisors (560072247).

3920505673 is an equidigital number, since it uses as much as digits as its factorization.

3920505673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560072246.

The product of its (nonzero) digits is 170100, while the sum is 40.

The square root of 3920505673 is about 62613.9415226354. The cubic root of 3920505673 is about 1576.8148288898.

The spelling of 3920505673 in words is "three billion, nine hundred twenty million, five hundred five thousand, six hundred seventy-three".