3128472499 has 4 divisors (see below), whose sum is σ = 3187500336. Its totient is φ = 3069444664.

The previous prime is 3128472449. The next prime is 3128472517. The reversal of 3128472499 is 9942748213.

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 3128472499 - 2¹¹ = 3128470451 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3128472419) 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, 29513839 + ... + 29513944.

It is an arithmetic number, because the mean of its divisors is an integer number (796875084).

Almost surely, 2^3128472499 is an apocalyptic number.

3128472499 is a deficient number, since it is larger than the sum of its proper divisors (59027837).

3128472499 is an equidigital number, since it uses as much as digits as its factorization.

3128472499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59027836.

The product of its digits is 870912, while the sum is 49.

The square root of 3128472499 is about 55932.7497893676. The cubic root of 3128472499 is about 1462.5501965774.

It can be divided in two parts, 312847 and 2499, that multiplied together give a triangular number (781804653 = T₃₉₅₄₂).

The spelling of 3128472499 in words is "three billion, one hundred twenty-eight million, four hundred seventy-two thousand, four hundred ninety-nine".