2820795157 has 12 divisors (see below), whose sum is σ = 3003461100. Its totient is φ = 2648644992.

The previous prime is 2820795149. The next prime is 2820795209. The reversal of 2820795157 is 7515970282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 401040676 + 2419754481 = 20026^2 + 49191^2 .

It is not a de Polignac number, because 2820795157 - 2³ = 2820795149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820795127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6219 + ... + 75367.

It is an arithmetic number, because the mean of its divisors is an integer number (250288425).

Almost surely, 2^2820795157 is an apocalyptic number.

It is an amenable number.

2820795157 is a deficient number, since it is larger than the sum of its proper divisors (182665943).

2820795157 is a wasteful number, since it uses less digits than its factorization.

2820795157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69300 (or 69281 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 46.

The square root of 2820795157 is about 53111.1584980030. The cubic root of 2820795157 is about 1412.9404219528.

The spelling of 2820795157 in words is "two billion, eight hundred twenty million, seven hundred ninety-five thousand, one hundred fifty-seven".