18814410913 has 4 divisors (see below), whose sum is σ = 19079402688. Its totient is φ = 18549419140.

The previous prime is 18814410893. The next prime is 18814410917. The reversal of 18814410913 is 31901441881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31901441881 = 67141 ⋅475141.

It is a cyclic number.

It is not a de Polignac number, because 18814410913 - 2¹³ = 18814402721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18814410917) 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, 132495781 + ... + 132495922.

It is an arithmetic number, because the mean of its divisors is an integer number (4769850672).

Almost surely, 2^18814410913 is an apocalyptic number.

It is an amenable number.

18814410913 is a deficient number, since it is larger than the sum of its proper divisors (264991775).

18814410913 is an equidigital number, since it uses as much as digits as its factorization.

18814410913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264991774.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 18814410913 in words is "eighteen billion, eight hundred fourteen million, four hundred ten thousand, nine hundred thirteen".