18483688133 has 4 divisors (see below), whose sum is σ = 18485947980. Its totient is φ = 18481428288.

The previous prime is 18483688087. The next prime is 18483688147. The reversal of 18483688133 is 33188638481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33188638481 = 101 ⋅328600381.

It can be written as a sum of positive squares in 2 ways, for example, as 8221592929 + 10262095204 = 90673^2 + 101302^2 .

It is a cyclic number.

It is not a de Polignac number, because 18483688133 - 2²² = 18479493829 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 (18483684133) 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, 1117610 + ... + 1134027.

It is an arithmetic number, because the mean of its divisors is an integer number (4621486995).

Almost surely, 2^18483688133 is an apocalyptic number.

It is an amenable number.

18483688133 is a deficient number, since it is larger than the sum of its proper divisors (2259847).

18483688133 is an equidigital number, since it uses as much as digits as its factorization.

18483688133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259846.

The product of its digits is 2654208, while the sum is 53.

The spelling of 18483688133 in words is "eighteen billion, four hundred eighty-three million, six hundred eighty-eight thousand, one hundred thirty-three".