2091771584 has 42 divisors (see below), whose sum is σ = 4828557780. Its totient is φ = 896472192.

The previous prime is 2091771581. The next prime is 2091771659. The reversal of 2091771584 is 4851771902.

It is not an unprimeable number, because it can be changed into a prime (2091771581) 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 in 5 ways as a sum of consecutive naturals, for example, 330374 + ... + 336645.

Almost surely, 2^2091771584 is an apocalyptic number.

It is an amenable number.

2091771584 is an abundant number, since it is smaller than the sum of its proper divisors (2736786196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2091771584 is an equidigital number, since it uses as much as digits as its factorization.

2091771584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667045 (or 667028 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 2091771584 is about 45735.8894523765. The cubic root of 2091771584 is about 1278.9044140890.

The spelling of 2091771584 in words is "two billion, ninety-one million, seven hundred seventy-one thousand, five hundred eighty-four".