3128362045 has 4 divisors (see below), whose sum is σ = 3754034460. Its totient is φ = 2502689632.

The previous prime is 3128362031. The next prime is 3128362051. The reversal of 3128362045 is 5402638213.

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 698069241 + 2430292804 = 26421^2 + 49298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3128362045 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3128362045.

It is a congruent number.

It is an unprimeable number.

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, 312836200 + ... + 312836209.

It is an arithmetic number, because the mean of its divisors is an integer number (938508615).

Almost surely, 2^3128362045 is an apocalyptic number.

It is an amenable number.

3128362045 is a deficient number, since it is larger than the sum of its proper divisors (625672415).

3128362045 is an equidigital number, since it uses as much as digits as its factorization.

3128362045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625672414.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 3128362045 is about 55931.7623984798. The cubic root of 3128362045 is about 1462.5329840858.

The spelling of 3128362045 in words is "three billion, one hundred twenty-eight million, three hundred sixty-two thousand, forty-five".