2530861139 has 4 divisors (see below), whose sum is σ = 2531648160. Its totient is φ = 2530074120.

The previous prime is 2530861133. The next prime is 2530861171. The reversal of 2530861139 is 9311680352.

It is a happy number.

2530861139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2530861139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2530861133) 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, 388667 + ... + 395124.

It is an arithmetic number, because the mean of its divisors is an integer number (632912040).

Almost surely, 2^2530861139 is an apocalyptic number.

2530861139 is a deficient number, since it is larger than the sum of its proper divisors (787021).

2530861139 is an equidigital number, since it uses as much as digits as its factorization.

2530861139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787020.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2530861139 is about 50307.6648136246. The cubic root of 2530861139 is about 1362.7706526717.

The spelling of 2530861139 in words is "two billion, five hundred thirty million, eight hundred sixty-one thousand, one hundred thirty-nine".