1023005609 has 2 divisors, whose sum is σ = 1023005610. Its totient is φ = 1023005608.

The previous prime is 1023005519. The next prime is 1023005623. The reversal of 1023005609 is 9065003201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705168025 + 317837584 = 26555^2 + 17828^2 .

It is an emirp because it is prime and its reverse (9065003201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1023005609 - 2¹² = 1023001513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023005909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511502804 + 511502805.

It is an arithmetic number, because the mean of its divisors is an integer number (511502805).

Almost surely, 2^1023005609 is an apocalyptic number.

It is an amenable number.

1023005609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023005609 is an equidigital number, since it uses as much as digits as its factorization.

1023005609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1023005609 is about 31984.4588667684. The cubic root of 1023005609 is about 1007.6104701466.

The spelling of 1023005609 in words is "one billion, twenty-three million, five thousand, six hundred nine".