2573127809 has 4 divisors (see below), whose sum is σ = 2940717504. Its totient is φ = 2205538116.

The previous prime is 2573127779. The next prime is 2573127841. The reversal of 2573127809 is 9087213752.

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 2573127809 - 2²⁴ = 2556350593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2573127809.

It is not an unprimeable number, because it can be changed into a prime (2573127209) 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, 183794837 + ... + 183794850.

It is an arithmetic number, because the mean of its divisors is an integer number (735179376).

Almost surely, 2^2573127809 is an apocalyptic number.

It is an amenable number.

2573127809 is a deficient number, since it is larger than the sum of its proper divisors (367589695).

2573127809 is an equidigital number, since it uses as much as digits as its factorization.

2573127809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367589694.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 2573127809 is about 50726.0072250912. The cubic root of 2573127809 is about 1370.3151297029.

The spelling of 2573127809 in words is "two billion, five hundred seventy-three million, one hundred twenty-seven thousand, eight hundred nine".