2530779785 has 8 divisors (see below), whose sum is σ = 3037239816. Its totient is φ = 2024421120.

The previous prime is 2530779739. The next prime is 2530779791. The reversal of 2530779785 is 5879770352.

It can be written as a sum of positive squares in 4 ways, for example, as 1102771264 + 1428008521 = 33208^2 + 37789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2530779785 - 2¹⁴ = 2530763401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49907 + ... + 86903.

It is an arithmetic number, because the mean of its divisors is an integer number (379654977).

Almost surely, 2^2530779785 is an apocalyptic number.

It is an amenable number.

2530779785 is a deficient number, since it is larger than the sum of its proper divisors (506460031).

2530779785 is a wasteful number, since it uses less digits than its factorization.

2530779785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50683.

The product of its (nonzero) digits is 3704400, while the sum is 53.

The square root of 2530779785 is about 50306.8562424646. The cubic root of 2530779785 is about 1362.7560505231.

The spelling of 2530779785 in words is "two billion, five hundred thirty million, seven hundred seventy-nine thousand, seven hundred eighty-five".