2091597013 has 16 divisors (see below), whose sum is σ = 2397928896. Its totient is φ = 1807021440.

The previous prime is 2091596999. The next prime is 2091597019. The reversal of 2091597013 is 3107951902.

It is a cyclic number.

It is not a de Polignac number, because 2091597013 - 2⁹ = 2091596501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091597019) 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 15 ways as a sum of consecutive naturals, for example, 42256 + ... + 77257.

It is an arithmetic number, because the mean of its divisors is an integer number (149870556).

Almost surely, 2^2091597013 is an apocalyptic number.

It is an amenable number.

2091597013 is a deficient number, since it is larger than the sum of its proper divisors (306331883).

2091597013 is a wasteful number, since it uses less digits than its factorization.

2091597013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119604.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 2091597013 is about 45733.9809441514. The cubic root of 2091597013 is about 1278.8688356611.

The spelling of 2091597013 in words is "two billion, ninety-one million, five hundred ninety-seven thousand, thirteen".