18473299133 has 4 divisors (see below), whose sum is σ = 18478493280. Its totient is φ = 18468104988.

The previous prime is 18473299123. The next prime is 18473299147. The reversal of 18473299133 is 33199237481.

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.

It is a cyclic number.

It is not a de Polignac number, because 18473299133 - 2⁶ = 18473299069 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 (18473299123) 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, 2591735 + ... + 2598852.

It is an arithmetic number, because the mean of its divisors is an integer number (4619623320).

Almost surely, 2^18473299133 is an apocalyptic number.

It is an amenable number.

18473299133 is a deficient number, since it is larger than the sum of its proper divisors (5194147).

18473299133 is an equidigital number, since it uses as much as digits as its factorization.

18473299133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194146.

The product of its digits is 979776, while the sum is 50.

The spelling of 18473299133 in words is "eighteen billion, four hundred seventy-three million, two hundred ninety-nine thousand, one hundred thirty-three".