18392198329 has 4 divisors (see below), whose sum is σ = 18397395940. Its totient is φ = 18387000720.

The previous prime is 18392198309. The next prime is 18392198339. The reversal of 18392198329 is 92389129381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13329164304 + 5063034025 = 115452^2 + 71155^2 .

It is a cyclic number.

It is not a de Polignac number, because 18392198329 - 2¹¹ = 18392196281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18392198329.

It is not an unprimeable number, because it can be changed into a prime (18392198309) 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, 2593494 + ... + 2600575.

It is an arithmetic number, because the mean of its divisors is an integer number (4599348985).

Almost surely, 2^18392198329 is an apocalyptic number.

It is an amenable number.

18392198329 is a deficient number, since it is larger than the sum of its proper divisors (5197611).

18392198329 is an equidigital number, since it uses as much as digits as its factorization.

18392198329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197610.

The product of its digits is 1679616, while the sum is 55.

The spelling of 18392198329 in words is "eighteen billion, three hundred ninety-two million, one hundred ninety-eight thousand, three hundred twenty-nine".