2309805491829 has 8 divisors (see below), whose sum is σ = 3359717079072. Its totient is φ = 1399882116240.

The previous prime is 2309805491801. The next prime is 2309805491831. The reversal of 2309805491829 is 9281945089032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2309805491829 - 2⁵ = 2309805491797 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309805491899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34997052874 + ... + 34997052939.

It is an arithmetic number, because the mean of its divisors is an integer number (419964634884).

Almost surely, 2^{2309805491829} is an apocalyptic number.

It is an amenable number.

2309805491829 is a deficient number, since it is larger than the sum of its proper divisors (1049911587243).

2309805491829 is a wasteful number, since it uses less digits than its factorization.

2309805491829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69994105827.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 2309805491829 in words is "two trillion, three hundred nine billion, eight hundred five million, four hundred ninety-one thousand, eight hundred twenty-nine".