2818668253 has 4 divisors (see below), whose sum is σ = 2915863740. Its totient is φ = 2721472768.

The previous prime is 2818668247. The next prime is 2818668319. The reversal of 2818668253 is 3528668182.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2192767929 + 625900324 = 46827^2 + 25018^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818668253 - 2⁹ = 2818667741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2818668197 and 2818668206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2818668553) 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, 48597700 + ... + 48597757.

It is an arithmetic number, because the mean of its divisors is an integer number (728965935).

Almost surely, 2^2818668253 is an apocalyptic number.

It is an amenable number.

2818668253 is a deficient number, since it is larger than the sum of its proper divisors (97195487).

2818668253 is an equidigital number, since it uses as much as digits as its factorization.

2818668253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97195486.

The product of its digits is 1105920, while the sum is 49.

The square root of 2818668253 is about 53091.1315852281. The cubic root of 2818668253 is about 1412.5852095514.

The spelling of 2818668253 in words is "two billion, eight hundred eighteen million, six hundred sixty-eight thousand, two hundred fifty-three".