2091775317 has 8 divisors (see below), whose sum is σ = 2795506560. Its totient is φ = 1391280480.

The previous prime is 2091775271. The next prime is 2091775331. The reversal of 2091775317 is 7135771902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2091775317 - 2⁶ = 2091775253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091776317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807592 + ... + 810177.

It is an arithmetic number, because the mean of its divisors is an integer number (349438320).

Almost surely, 2^2091775317 is an apocalyptic number.

It is an amenable number.

2091775317 is a deficient number, since it is larger than the sum of its proper divisors (703731243).

2091775317 is a wasteful number, since it uses less digits than its factorization.

2091775317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618203.

The product of its (nonzero) digits is 92610, while the sum is 42.

The square root of 2091775317 is about 45735.9302627595. The cubic root of 2091775317 is about 1278.9051748712.

The spelling of 2091775317 in words is "two billion, ninety-one million, seven hundred seventy-five thousand, three hundred seventeen".