3128469091 has 4 divisors (see below), whose sum is σ = 3412875384. Its totient is φ = 2844062800.

The previous prime is 3128469089. The next prime is 3128469109. The reversal of 3128469091 is 1909648213.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3128469091 - 2¹ = 3128469089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128469011) 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, 142203130 + ... + 142203151.

It is an arithmetic number, because the mean of its divisors is an integer number (853218846).

Almost surely, 2^3128469091 is an apocalyptic number.

3128469091 is a deficient number, since it is larger than the sum of its proper divisors (284406293).

3128469091 is a wasteful number, since it uses less digits than its factorization.

3128469091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284406292.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3128469091 is about 55932.7193242024. The cubic root of 3128469091 is about 1462.5496655011.

The spelling of 3128469091 in words is "three billion, one hundred twenty-eight million, four hundred sixty-nine thousand, ninety-one".