2028058307509 has 8 divisors (see below), whose sum is σ = 2184916979000. Its totient is φ = 1871321662656.

The previous prime is 2028058307497. The next prime is 2028058307549. The reversal of 2028058307509 is 9057038508202.

It can be written as a sum of positive squares in 4 ways, for example, as 294872892484 + 1733185415025 = 543022^2 + 1316505^2 .

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 2028058307509 - 2¹³ = 2028058299317 is a prime.

It is a super-2 number, since 2×2028058307509² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028058307549) 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 7 ways as a sum of consecutive naturals, for example, 30472134 + ... + 30538615.

It is an arithmetic number, because the mean of its divisors is an integer number (273114622375).

Almost surely, 2^{2028058307509} is an apocalyptic number.

It is an amenable number.

2028058307509 is a deficient number, since it is larger than the sum of its proper divisors (156858671491).

2028058307509 is a wasteful number, since it uses less digits than its factorization.

2028058307509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61013319.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 2028058307509 in words is "two trillion, twenty-eight billion, fifty-eight million, three hundred seven thousand, five hundred nine".