2028170659 has 6 divisors (see below), whose sum is σ = 2120186516. Its totient is φ = 1939988820.

The previous prime is 2028170623. The next prime is 2028170687. The reversal of 2028170659 is 9560718202.

It is not a de Polignac number, because 2028170659 - 2⁹ = 2028170147 is a prime.

It is a super-2 number, since 2×2028170659² = 8226952444056988562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2028170699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1916457 + ... + 1917514.

Almost surely, 2^2028170659 is an apocalyptic number.

2028170659 is a deficient number, since it is larger than the sum of its proper divisors (92015857).

2028170659 is an equidigital number, since it uses as much as digits as its factorization.

2028170659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834017 (or 3833994 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2028170659 is about 45035.2157649988. The cubic root of 2028170659 is about 1265.8089591497.

The spelling of 2028170659 in words is "two billion, twenty-eight million, one hundred seventy thousand, six hundred fifty-nine".