2430785809 has 9 divisors (see below), whose sum is σ = 2485974907. Its totient is φ = 2376799024.

The previous prime is 2430785807. The next prime is 2430785813. The reversal of 2430785809 is 9085870342.

The square root of 2430785809 is 49303.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2204584209 + 226201600 = 46953^2 + 15040^2 .

It is not a de Polignac number, because 2430785809 - 2¹ = 2430785807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2430785801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2316717 + ... + 2317765.

Almost surely, 2^2430785809 is an apocalyptic number.

2430785809 is the 49303-rd square number.

2430785809 is the 24652-nd centered octagonal number.

It is an amenable number.

2430785809 is a deficient number, since it is larger than the sum of its proper divisors (55189098).

2430785809 is an frugal number, since it uses more digits than its factorization.

2430785809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The cubic root of 2430785809 is about 1344.5663272040.

The spelling of 2430785809 in words is "two billion, four hundred thirty million, seven hundred eighty-five thousand, eight hundred nine".