1299026563 has 2 divisors, whose sum is σ = 1299026564. Its totient is φ = 1299026562.

The previous prime is 1299026557. The next prime is 1299026569. The reversal of 1299026563 is 3656209921.

It is a balanced prime because it is at equal distance from previous prime (1299026557) and next prime (1299026569).

It is a cyclic number.

It is not a de Polignac number, because 1299026563 - 2²¹ = 1296929411 is a prime.

It is a super-2 number, since 2×1299026563² = 3374940022759185938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1299026569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649513281 + 649513282.

It is an arithmetic number, because the mean of its divisors is an integer number (649513282).

Almost surely, 2^1299026563 is an apocalyptic number.

1299026563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299026563 is an equidigital number, since it uses as much as digits as its factorization.

1299026563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 1299026563 is about 36042.0110842888. The cubic root of 1299026563 is about 1091.1204042152.

The spelling of 1299026563 in words is "one billion, two hundred ninety-nine million, twenty-six thousand, five hundred sixty-three".