18199849948322 has 8 divisors (see below), whose sum is σ = 31199742768576. Its totient is φ = 7799935692132.

The previous prime is 18199849948321. The next prime is 18199849948337. The reversal of 18199849948322 is 22384994899181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18199849948321) 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, 649994640998 + ... + 649994641025.

It is an arithmetic number, because the mean of its divisors is an integer number (3899967846072).

Almost surely, 2^{18199849948322} is an apocalyptic number.

18199849948322 is a deficient number, since it is larger than the sum of its proper divisors (12999892820254).

18199849948322 is a wasteful number, since it uses less digits than its factorization.

18199849948322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299989282032.

The product of its digits is 644972544, while the sum is 77.

The spelling of 18199849948322 in words is "eighteen trillion, one hundred ninety-nine billion, eight hundred forty-nine million, nine hundred forty-eight thousand, three hundred twenty-two".