3128652797 has 4 divisors (see below), whose sum is σ = 3131978556. Its totient is φ = 3125327040.

The previous prime is 3128652743. The next prime is 3128652823. The reversal of 3128652797 is 7972568213.

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 1842641476 + 1286011321 = 42926^2 + 35861^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128652797 - 2¹⁶ = 3128587261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128622797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661468 + ... + 1663349.

It is an arithmetic number, because the mean of its divisors is an integer number (782994639).

Almost surely, 2^3128652797 is an apocalyptic number.

It is an amenable number.

3128652797 is a deficient number, since it is larger than the sum of its proper divisors (3325759).

3128652797 is an equidigital number, since it uses as much as digits as its factorization.

3128652797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325758.

The product of its digits is 1270080, while the sum is 50.

The square root of 3128652797 is about 55934.3615052501. The cubic root of 3128652797 is about 1462.5782922706.

The spelling of 3128652797 in words is "three billion, one hundred twenty-eight million, six hundred fifty-two thousand, seven hundred ninety-seven".