1026163505 has 4 divisors (see below), whose sum is σ = 1231396212. Its totient is φ = 820930800.

The previous prime is 1026163499. The next prime is 1026163507. The reversal of 1026163505 is 5053616201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 320517409 + 705646096 = 17903^2 + 26564^2 .

It is not a de Polignac number, because 1026163505 - 2⁸ = 1026163249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026163507) 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 3 ways as a sum of consecutive naturals, for example, 102616346 + ... + 102616355.

It is an arithmetic number, because the mean of its divisors is an integer number (307849053).

Almost surely, 2^1026163505 is an apocalyptic number.

It is an amenable number.

1026163505 is a deficient number, since it is larger than the sum of its proper divisors (205232707).

1026163505 is an equidigital number, since it uses as much as digits as its factorization.

1026163505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205232706.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1026163505 is about 32033.7869288038. The cubic root of 1026163505 is about 1008.6461961714.

Adding to 1026163505 its reverse (5053616201), we get a palindrome (6079779706).

The spelling of 1026163505 in words is "one billion, twenty-six million, one hundred sixty-three thousand, five hundred five".