1026563873 has 2 divisors, whose sum is σ = 1026563874. Its totient is φ = 1026563872.

The previous prime is 1026563861. The next prime is 1026563891. The reversal of 1026563873 is 3783656201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 964909969 + 61653904 = 31063^2 + 7852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026563873 - 2²⁶ = 959455009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1026563873.

It is not a weakly prime, because it can be changed into another prime (1026563803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513281936 + 513281937.

It is an arithmetic number, because the mean of its divisors is an integer number (513281937).

Almost surely, 2^1026563873 is an apocalyptic number.

It is an amenable number.

1026563873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026563873 is an equidigital number, since it uses as much as digits as its factorization.

1026563873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1026563873 is about 32040.0354712663. The cubic root of 1026563873 is about 1008.7773569303. Note that the first 3 decimals are identical.

The spelling of 1026563873 in words is "one billion, twenty-six million, five hundred sixty-three thousand, eight hundred seventy-three".