2638116853 has 2 divisors, whose sum is σ = 2638116854. Its totient is φ = 2638116852.

The previous prime is 2638116847. The next prime is 2638116917. The reversal of 2638116853 is 3586118362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1689045604 + 949071249 = 41098^2 + 30807^2 .

It is a cyclic number.

It is not a de Polignac number, because 2638116853 - 2⁵ = 2638116821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638116823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319058426 + 1319058427.

It is an arithmetic number, because the mean of its divisors is an integer number (1319058427).

Almost surely, 2^2638116853 is an apocalyptic number.

It is an amenable number.

2638116853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638116853 is an equidigital number, since it uses as much as digits as its factorization.

2638116853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 2638116853 is about 51362.6016961758. The cubic root of 2638116853 is about 1381.7559480680.

It can be divided in two parts, 26381 and 16853, that added together give a palindrome (43234).

The spelling of 2638116853 in words is "two billion, six hundred thirty-eight million, one hundred sixteen thousand, eight hundred fifty-three".