113809594891 has 4 divisors (see below), whose sum is σ = 115956945792. Its totient is φ = 111662243992.

The previous prime is 113809594837. The next prime is 113809594933. The reversal of 113809594891 is 198495908311.

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

It is a cyclic number.

It is not a de Polignac number, because 113809594891 - 2¹³ = 113809586699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113809504891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073675371 + ... + 1073675476.

It is an arithmetic number, because the mean of its divisors is an integer number (28989236448).

Almost surely, 2^113809594891 is an apocalyptic number.

113809594891 is a deficient number, since it is larger than the sum of its proper divisors (2147350901).

113809594891 is an equidigital number, since it uses as much as digits as its factorization.

113809594891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147350900.

The product of its (nonzero) digits is 2799360, while the sum is 58.

The spelling of 113809594891 in words is "one hundred thirteen billion, eight hundred nine million, five hundred ninety-four thousand, eight hundred ninety-one".