3128488689 has 4 divisors (see below), whose sum is σ = 4171318256. Its totient is φ = 2085659124.

The previous prime is 3128488673. The next prime is 3128488697. The reversal of 3128488689 is 9868848213.

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 not a de Polignac number, because 3128488689 - 2⁴ = 3128488673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128488619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521414779 + ... + 521414784.

It is an arithmetic number, because the mean of its divisors is an integer number (1042829564).

Almost surely, 2^3128488689 is an apocalyptic number.

It is an amenable number.

3128488689 is a deficient number, since it is larger than the sum of its proper divisors (1042829567).

3128488689 is a wasteful number, since it uses less digits than its factorization.

3128488689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042829566.

The product of its digits is 5308416, while the sum is 57.

The square root of 3128488689 is about 55932.8945165544. The cubic root of 3128488689 is about 1462.5527194963.

The spelling of 3128488689 in words is "three billion, one hundred twenty-eight million, four hundred eighty-eight thousand, six hundred eighty-nine".