2082578345 has 8 divisors (see below), whose sum is σ = 2501195976. Its totient is φ = 1664661376.

The previous prime is 2082578341. The next prime is 2082578359. The reversal of 2082578345 is 5438752802.

It can be written as a sum of positive squares in 4 ways, for example, as 7958041 + 2074620304 = 2821^2 + 45548^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2082578345 - 2² = 2082578341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2082578296 and 2082578305.

It is not an unprimeable number, because it can be changed into a prime (2082578341) 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 7 ways as a sum of consecutive naturals, for example, 168602 + ... + 180531.

It is an arithmetic number, because the mean of its divisors is an integer number (312649497).

Almost surely, 2^2082578345 is an apocalyptic number.

It is an amenable number.

2082578345 is a deficient number, since it is larger than the sum of its proper divisors (418617631).

2082578345 is a wasteful number, since it uses less digits than its factorization.

2082578345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350331.

The product of its (nonzero) digits is 537600, while the sum is 44.

The square root of 2082578345 is about 45635.2752265175. The cubic root of 2082578345 is about 1277.0280874336.

The spelling of 2082578345 in words is "two billion, eighty-two million, five hundred seventy-eight thousand, three hundred forty-five".