1028168769 has 16 divisors (see below), whose sum is σ = 1385531840. Its totient is φ = 678144960.

The previous prime is 1028168753. The next prime is 1028168773. The reversal of 1028168769 is 9678618201.

It is not a de Polignac number, because 1028168769 - 2⁴ = 1028168753 is a prime.

It is a super-2 number, since 2×1028168769² = 2114262035093950722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028168749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263259 + ... + 267135.

It is an arithmetic number, because the mean of its divisors is an integer number (86595740).

Almost surely, 2^1028168769 is an apocalyptic number.

It is an amenable number.

1028168769 is a deficient number, since it is larger than the sum of its proper divisors (357363071).

1028168769 is a wasteful number, since it uses less digits than its factorization.

1028168769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1028168769 is about 32065.0708559953. The cubic root of 1028168769 is about 1009.3027795989.

The spelling of 1028168769 in words is "one billion, twenty-eight million, one hundred sixty-eight thousand, seven hundred sixty-nine".