2091415853 has 2 divisors, whose sum is σ = 2091415854. Its totient is φ = 2091415852.

The previous prime is 2091415801. The next prime is 2091415867. The reversal of 2091415853 is 3585141902.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2008204969 + 83210884 = 44813^2 + 9122^2 .

It is a cyclic number.

It is not a de Polignac number, because 2091415853 - 2⁶ = 2091415789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091412853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045707926 + 1045707927.

It is an arithmetic number, because the mean of its divisors is an integer number (1045707927).

Almost surely, 2^2091415853 is an apocalyptic number.

It is an amenable number.

2091415853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091415853 is an equidigital number, since it uses as much as digits as its factorization.

2091415853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 2091415853 is about 45732.0003170646. Note that the first 3 decimals coincide. The cubic root of 2091415853 is about 1278.8319122694.

The spelling of 2091415853 in words is "two billion, ninety-one million, four hundred fifteen thousand, eight hundred fifty-three".