18349584349 has 4 divisors (see below), whose sum is σ = 18353260000. Its totient is φ = 18345908700.

The previous prime is 18349584347. The next prime is 18349584359. The reversal of 18349584349 is 94348594381.

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 18349584349 - 2¹ = 18349584347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18349584293 and 18349584302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18349584347) 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, 1830327 + ... + 1840324.

It is an arithmetic number, because the mean of its divisors is an integer number (4588315000).

Almost surely, 2^18349584349 is an apocalyptic number.

It is an amenable number.

18349584349 is a deficient number, since it is larger than the sum of its proper divisors (3675651).

18349584349 is an equidigital number, since it uses as much as digits as its factorization.

18349584349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675650.

The product of its digits is 14929920, while the sum is 58.

The spelling of 18349584349 in words is "eighteen billion, three hundred forty-nine million, five hundred eighty-four thousand, three hundred forty-nine".