2081122757 has 12 divisors (see below), whose sum is σ = 2486329740. Its totient is φ = 1735606656.

The previous prime is 2081122741. The next prime is 2081122781. The reversal of 2081122757 is 7572211802.

It can be written as a sum of positive squares in 2 ways, for example, as 1453820641 + 627302116 = 38129^2 + 25046^2 .

It is not a de Polignac number, because 2081122757 - 2⁴ = 2081122741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081122717) 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, 572132 + ... + 575757.

It is an arithmetic number, because the mean of its divisors is an integer number (207194145).

Almost surely, 2^2081122757 is an apocalyptic number.

It is an amenable number.

2081122757 is a deficient number, since it is larger than the sum of its proper divisors (405206983).

2081122757 is a wasteful number, since it uses less digits than its factorization.

2081122757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147940 (or 1147933 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 2081122757 is about 45619.3243812313. The cubic root of 2081122757 is about 1276.7304979897.

The spelling of 2081122757 in words is "two billion, eighty-one million, one hundred twenty-two thousand, seven hundred fifty-seven".