2130783509 has 4 divisors (see below), whose sum is σ = 2140338816. Its totient is φ = 2121228204.

The previous prime is 2130783461. The next prime is 2130783511. The reversal of 2130783509 is 9053870312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2130783509 - 2²⁸ = 1862348053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130783559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4777319 + ... + 4777764.

It is an arithmetic number, because the mean of its divisors is an integer number (535084704).

Almost surely, 2^2130783509 is an apocalyptic number.

It is an amenable number.

2130783509 is a deficient number, since it is larger than the sum of its proper divisors (9555307).

2130783509 is an equidigital number, since it uses as much as digits as its factorization.

2130783509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9555306.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 2130783509 is about 46160.4106242568. The cubic root of 2130783509 is about 1286.8060941001.

The spelling of 2130783509 in words is "two billion, one hundred thirty million, seven hundred eighty-three thousand, five hundred nine".