2820105157 has 2 divisors, whose sum is σ = 2820105158. Its totient is φ = 2820105156.

The previous prime is 2820105149. The next prime is 2820105181. The reversal of 2820105157 is 7515010282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1728397476 + 1091707681 = 41574^2 + 33041^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820105157 - 2³ = 2820105149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2820105137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410052578 + 1410052579.

It is an arithmetic number, because the mean of its divisors is an integer number (1410052579).

Almost surely, 2^2820105157 is an apocalyptic number.

It is an amenable number.

2820105157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820105157 is an equidigital number, since it uses as much as digits as its factorization.

2820105157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 2820105157 is about 53104.6622906125. The cubic root of 2820105157 is about 1412.8252052213.

The spelling of 2820105157 in words is "two billion, eight hundred twenty million, one hundred five thousand, one hundred fifty-seven".