2509730869 has 4 divisors (see below), whose sum is σ = 2550874060. Its totient is φ = 2468587680.

The previous prime is 2509730837. The next prime is 2509730911. The reversal of 2509730869 is 9680379052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 964847844 + 1544883025 = 31062^2 + 39305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2509730869 - 2⁵ = 2509730837 is a prime.

It is a super-2 number, since 2×2509730869² = 12597498069622990322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509730269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20571504 + ... + 20571625.

It is an arithmetic number, because the mean of its divisors is an integer number (637718515).

Almost surely, 2^2509730869 is an apocalyptic number.

It is an amenable number.

2509730869 is a deficient number, since it is larger than the sum of its proper divisors (41143191).

2509730869 is an equidigital number, since it uses as much as digits as its factorization.

2509730869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41143190.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 2509730869 is about 50097.2141840242. The cubic root of 2509730869 is about 1358.9674380171.

The spelling of 2509730869 in words is "two billion, five hundred nine million, seven hundred thirty thousand, eight hundred sixty-nine".