2691258593 has 4 divisors (see below), whose sum is σ = 2849567940. Its totient is φ = 2532949248.

The previous prime is 2691258541. The next prime is 2691258617. The reversal of 2691258593 is 3958521962.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1745819089 + 945439504 = 41783^2 + 30748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2691258593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2691258523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79154648 + ... + 79154681.

It is an arithmetic number, because the mean of its divisors is an integer number (712391985).

Almost surely, 2^2691258593 is an apocalyptic number.

It is an amenable number.

2691258593 is a deficient number, since it is larger than the sum of its proper divisors (158309347).

2691258593 is a wasteful number, since it uses less digits than its factorization.

2691258593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158309346.

The product of its digits is 1166400, while the sum is 50.

The square root of 2691258593 is about 51877.3418073825. The cubic root of 2691258593 is about 1390.9722840482.

The spelling of 2691258593 in words is "two billion, six hundred ninety-one million, two hundred fifty-eight thousand, five hundred ninety-three".