2091859475 has 6 divisors (see below), whose sum is σ = 2593905780. Its totient is φ = 1673487560.

The previous prime is 2091859433. The next prime is 2091859477. The reversal of 2091859475 is 5749581902.

It is not a de Polignac number, because 2091859475 - 2⁶ = 2091859411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2091859477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41837165 + ... + 41837214.

It is an arithmetic number, because the mean of its divisors is an integer number (432317630).

Almost surely, 2^2091859475 is an apocalyptic number.

2091859475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2091859475 is a deficient number, since it is larger than the sum of its proper divisors (502046305).

2091859475 is an equidigital number, since it uses as much as digits as its factorization.

2091859475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83674389 (or 83674384 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 50.

The square root of 2091859475 is about 45736.8502960140. The cubic root of 2091859475 is about 1278.9223259577.

The spelling of 2091859475 in words is "two billion, ninety-one million, eight hundred fifty-nine thousand, four hundred seventy-five".