2090669591 has 2 divisors, whose sum is σ = 2090669592. Its totient is φ = 2090669590.

The previous prime is 2090669587. The next prime is 2090669627. The reversal of 2090669591 is 1959660902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2090669591 - 2² = 2090669587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2090669501) 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, 1045334795 + 1045334796.

It is an arithmetic number, because the mean of its divisors is an integer number (1045334796).

Almost surely, 2^2090669591 is an apocalyptic number.

2090669591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090669591 is an equidigital number, since it uses as much as digits as its factorization.

2090669591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 2090669591 is about 45723.8405101759. The cubic root of 2090669591 is about 1278.6797892962.

The spelling of 2090669591 in words is "two billion, ninety million, six hundred sixty-nine thousand, five hundred ninety-one".