1026328869 has 12 divisors (see below), whose sum is σ = 1483641900. Its totient is φ = 683680704.

The previous prime is 1026328861. The next prime is 1026328943. The reversal of 1026328869 is 9688236201.

1026328869 is a `hidden beast` number, since 1 + 0 + 2 + 632 + 8 + 8 + 6 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 903783969 + 122544900 = 30063^2 + 11070^2 .

It is not a de Polignac number, because 1026328869 - 2³ = 1026328861 is a prime.

It is a super-2 number, since 2×1026328869² = 2106701894685638322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026328861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32634 + ... + 55835.

It is an arithmetic number, because the mean of its divisors is an integer number (123636825).

Almost surely, 2^1026328869 is an apocalyptic number.

It is an amenable number.

1026328869 is a deficient number, since it is larger than the sum of its proper divisors (457313031).

1026328869 is a wasteful number, since it uses less digits than its factorization.

1026328869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89764 (or 89761 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1026328869 is about 32036.3679121089. The cubic root of 1026328869 is about 1008.7003736360.

The spelling of 1026328869 in words is "one billion, twenty-six million, three hundred twenty-eight thousand, eight hundred sixty-nine".