2506810863 has 4 divisors (see below), whose sum is σ = 3342414488. Its totient is φ = 1671207240.

The previous prime is 2506810853. The next prime is 2506810913. The reversal of 2506810863 is 3680186052.

It is a happy number.

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

It is not a de Polignac number, because 2506810863 - 2¹⁰ = 2506809839 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 (2506810843) 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, 417801808 + ... + 417801813.

It is an arithmetic number, because the mean of its divisors is an integer number (835603622).

Almost surely, 2^2506810863 is an apocalyptic number.

2506810863 is a deficient number, since it is larger than the sum of its proper divisors (835603625).

2506810863 is an equidigital number, since it uses as much as digits as its factorization.

2506810863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835603624.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 2506810863 is about 50068.0623052261. The cubic root of 2506810863 is about 1358.4401925024.

The spelling of 2506810863 in words is "two billion, five hundred six million, eight hundred ten thousand, eight hundred sixty-three".