2820718253 has 2 divisors, whose sum is σ = 2820718254. Its totient is φ = 2820718252.

The previous prime is 2820718223. The next prime is 2820718267. The reversal of 2820718253 is 3528170282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2241738409 + 578979844 = 47347^2 + 24062^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820718253 - 2⁶ = 2820718189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2820718213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410359126 + 1410359127.

It is an arithmetic number, because the mean of its divisors is an integer number (1410359127).

Almost surely, 2^2820718253 is an apocalyptic number.

It is an amenable number.

2820718253 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820718253 is an equidigital number, since it uses as much as digits as its factorization.

2820718253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 2820718253 is about 53110.4345020825. The cubic root of 2820718253 is about 1412.9275813941.

The spelling of 2820718253 in words is "two billion, eight hundred twenty million, seven hundred eighteen thousand, two hundred fifty-three".