1009023569 has 2 divisors, whose sum is σ = 1009023570. Its totient is φ = 1009023568.

The previous prime is 1009023563. The next prime is 1009023637. The reversal of 1009023569 is 9653209001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929457169 + 79566400 = 30487^2 + 8920^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009023569 - 2¹⁶ = 1008958033 is a prime.

It is a super-2 number, since 2×1009023569² = 2036257125594995522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1009023563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504511784 + 504511785.

It is an arithmetic number, because the mean of its divisors is an integer number (504511785).

Almost surely, 2^1009023569 is an apocalyptic number.

It is an amenable number.

1009023569 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009023569 is an equidigital number, since it uses as much as digits as its factorization.

1009023569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 1009023569 is about 31765.1313392531. The cubic root of 1009023569 is about 1002.9988542170.

The spelling of 1009023569 in words is "one billion, nine million, twenty-three thousand, five hundred sixty-nine".