1026326563 has 4 divisors (see below), whose sum is σ = 1026394128. Its totient is φ = 1026259000.

The previous prime is 1026326531. The next prime is 1026326599. The reversal of 1026326563 is 3656236201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1026326563 - 2⁵ = 1026326531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026326963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813 + ... + 45313.

It is an arithmetic number, because the mean of its divisors is an integer number (256598532).

Almost surely, 2^1026326563 is an apocalyptic number.

1026326563 is a deficient number, since it is larger than the sum of its proper divisors (67565).

1026326563 is an equidigital number, since it uses as much as digits as its factorization.

1026326563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67564.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 1026326563 is about 32036.3319217416. The cubic root of 1026326563 is about 1008.6996181716.

The spelling of 1026326563 in words is "one billion, twenty-six million, three hundred twenty-six thousand, five hundred sixty-three".