2009263523 has 2 divisors, whose sum is σ = 2009263524. Its totient is φ = 2009263522.

The previous prime is 2009263499. The next prime is 2009263591. The reversal of 2009263523 is 3253629002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2009263523 - 2¹⁰ = 2009262499 is a prime.

It is a super-4 number, since 4×2009263523⁴ (a number of 38 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2009263523.

It is not a weakly prime, because it can be changed into another prime (2009263423) 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, 1004631761 + 1004631762.

It is an arithmetic number, because the mean of its divisors is an integer number (1004631762).

Almost surely, 2^2009263523 is an apocalyptic number.

2009263523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009263523 is an equidigital number, since it uses as much as digits as its factorization.

2009263523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 2009263523 is about 44824.8092355115. The cubic root of 2009263523 is about 1261.8632722746.

The spelling of 2009263523 in words is "two billion, nine million, two hundred sixty-three thousand, five hundred twenty-three".