113493644309 has 4 divisors (see below), whose sum is σ = 113512896204. Its totient is φ = 113474392416.

The previous prime is 113493644273. The next prime is 113493644323. The reversal of 113493644309 is 903446394311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 903446394311 = 83 ⋅10884896317.

It can be written as a sum of positive squares in 2 ways, for example, as 106992447409 + 6501196900 = 327097^2 + 80630^2 .

It is a cyclic number.

It is not a de Polignac number, because 113493644309 - 2²⁸ = 113225208853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113493644609) 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, 9617102 + ... + 9628895.

It is an arithmetic number, because the mean of its divisors is an integer number (28378224051).

Almost surely, 2^113493644309 is an apocalyptic number.

It is an amenable number.

113493644309 is a deficient number, since it is larger than the sum of its proper divisors (19251895).

113493644309 is an equidigital number, since it uses as much as digits as its factorization.

113493644309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19251894.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 113493644309 in words is "one hundred thirteen billion, four hundred ninety-three million, six hundred forty-four thousand, three hundred nine".