3128545085 has 16 divisors (see below), whose sum is σ = 3891259440. Its totient is φ = 2411834880.

The previous prime is 3128545067. The next prime is 3128545093. The reversal of 3128545085 is 5805458213.

It can be written as a sum of positive squares in 8 ways, for example, as 268324 + 3128276761 = 518^2 + 55931^2 .

It is not a de Polignac number, because 3128545085 - 2⁸ = 3128544829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54839 + ... + 96251.

It is an arithmetic number, because the mean of its divisors is an integer number (243203715).

Almost surely, 2^3128545085 is an apocalyptic number.

It is an amenable number.

3128545085 is a deficient number, since it is larger than the sum of its proper divisors (762714355).

3128545085 is a wasteful number, since it uses less digits than its factorization.

3128545085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41968.

The product of its (nonzero) digits is 192000, while the sum is 41.

The square root of 3128545085 is about 55933.3986541136. The cubic root of 3128545085 is about 1462.5615077256.

The spelling of 3128545085 in words is "three billion, one hundred twenty-eight million, five hundred forty-five thousand, eighty-five".