2091753655 has 4 divisors (see below), whose sum is σ = 2510104392. Its totient is φ = 1673402920.

The previous prime is 2091753641. The next prime is 2091753679. The reversal of 2091753655 is 5563571902.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2091753655 - 2⁷ = 2091753527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209175361 + ... + 209175370.

It is an arithmetic number, because the mean of its divisors is an integer number (627526098).

Almost surely, 2^2091753655 is an apocalyptic number.

2091753655 is a deficient number, since it is larger than the sum of its proper divisors (418350737).

2091753655 is an equidigital number, since it uses as much as digits as its factorization.

2091753655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418350736.

The product of its (nonzero) digits is 283500, while the sum is 43.

The square root of 2091753655 is about 45735.6934461477. The cubic root of 2091753655 is about 1278.9007601619.

The spelling of 2091753655 in words is "two billion, ninety-one million, seven hundred fifty-three thousand, six hundred fifty-five".