4128694673 has 4 divisors (see below), whose sum is σ = 4165231908. Its totient is φ = 4092157440.

The previous prime is 4128694657. The next prime is 4128694721. The reversal of 4128694673 is 3764968214.

4128694673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2161506064 + 1967188609 = 46492^2 + 44353^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128694673 - 2⁴ = 4128694657 is a prime.

It is a super-2 number, since 2×4128694673² = 34092239405717153858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4128691673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18268448 + ... + 18268673.

It is an arithmetic number, because the mean of its divisors is an integer number (1041307977).

Almost surely, 2^4128694673 is an apocalyptic number.

It is an amenable number.

4128694673 is a deficient number, since it is larger than the sum of its proper divisors (36537235).

4128694673 is a wasteful number, since it uses less digits than its factorization.

4128694673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36537234.

The product of its digits is 1741824, while the sum is 50.

The square root of 4128694673 is about 64254.9194459070. The cubic root of 4128694673 is about 1604.2458419304.

The spelling of 4128694673 in words is "four billion, one hundred twenty-eight million, six hundred ninety-four thousand, six hundred seventy-three".