1023266513 has 2 divisors, whose sum is σ = 1023266514. Its totient is φ = 1023266512.

The previous prime is 1023266501. The next prime is 1023266591. The reversal of 1023266513 is 3156623201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978000529 + 45265984 = 31273^2 + 6728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023266513 - 2¹⁸ = 1023004369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023266593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511633256 + 511633257.

It is an arithmetic number, because the mean of its divisors is an integer number (511633257).

Almost surely, 2^1023266513 is an apocalyptic number.

It is an amenable number.

1023266513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023266513 is an equidigital number, since it uses as much as digits as its factorization.

1023266513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1023266513 is about 31988.5372125704. The cubic root of 1023266513 is about 1007.6961220902.

Adding to 1023266513 its reverse (3156623201), we get a palindrome (4179889714).

The spelling of 1023266513 in words is "one billion, twenty-three million, two hundred sixty-six thousand, five hundred thirteen".