18473130853 has 4 divisors (see below), whose sum is σ = 18528941248. Its totient is φ = 18417320460.

The previous prime is 18473130787. The next prime is 18473130889. The reversal of 18473130853 is 35803137481.

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: 35803137481 = 9463 ⋅3783487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18473130853 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 (18473130353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27904701 + ... + 27905362.

It is an arithmetic number, because the mean of its divisors is an integer number (4632235312).

Almost surely, 2^18473130853 is an apocalyptic number.

It is an amenable number.

18473130853 is a deficient number, since it is larger than the sum of its proper divisors (55810395).

18473130853 is an equidigital number, since it uses as much as digits as its factorization.

18473130853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55810394.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 18473130853 in words is "eighteen billion, four hundred seventy-three million, one hundred thirty thousand, eight hundred fifty-three".