2091291013 has 16 divisors (see below), whose sum is σ = 2469470976. Its totient is φ = 1733921280.

The previous prime is 2091290863. The next prime is 2091291017. The reversal of 2091291013 is 3101921902.

It is a de Polignac number, because none of the positive numbers 2^k-2091291013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091291017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13356 + ... + 66037.

It is an arithmetic number, because the mean of its divisors is an integer number (154341936).

Almost surely, 2^2091291013 is an apocalyptic number.

It is an amenable number.

2091291013 is a deficient number, since it is larger than the sum of its proper divisors (378179963).

2091291013 is an equidigital number, since it uses as much as digits as its factorization.

2091291013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79524.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2091291013 is about 45730.6353881072. The cubic root of 2091291013 is about 1278.8064665803.

The spelling of 2091291013 in words is "two billion, ninety-one million, two hundred ninety-one thousand, thirteen".