2091795077 has 2 divisors, whose sum is σ = 2091795078. Its totient is φ = 2091795076.

The previous prime is 2091795061. The next prime is 2091795089. The reversal of 2091795077 is 7705971902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316673796 + 775121281 = 36286^2 + 27841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091795077 - 2⁴ = 2091795061 is a prime.

It is a super-4 number, since 4×2091795077⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091795877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045897538 + 1045897539.

It is an arithmetic number, because the mean of its divisors is an integer number (1045897539).

Almost surely, 2^2091795077 is an apocalyptic number.

It is an amenable number.

2091795077 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091795077 is an equidigital number, since it uses as much as digits as its factorization.

2091795077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 277830, while the sum is 47.

The square root of 2091795077 is about 45736.1462849681. The cubic root of 2091795077 is about 1278.9092019268.

The spelling of 2091795077 in words is "two billion, ninety-one million, seven hundred ninety-five thousand, seventy-seven".